The correct statement is "Vectors and point in opposite directions". If the eastward component of one vector is equal to the westward component of another vector and their northward components are equal, then the two vectors are equal in magnitude and opposite in direction.
The direction of the vectors is determined by the direction of their components, so if the components in opposite directions are equal, the vectors must point in opposite directions. This means that when the two vectors are added, their components cancel and the result is a zero vector. The magnitude of each vector remains the same, but their direction is different.
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if this connection is maintained for 1.5 min , how much energy is transferred to the dead battery?
a) The car with the dead battery is the one that has its battery being charged by the other car.
b) The amount of energy transferred to the dead battery can be calculated as follows:
Energy = Voltage * Current * Time
Since the current is 30A and the time is 1 minute (60 seconds), the energy transferred can be calculated as:
Energy = Voltage * 30A * 60s = Voltage * 1800 C
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A 4. 0 kg bowling ball sliding to the right at 8. 00 m/s has an elastic head-on collision with another 4. 0 kg bowling ball initially at rest. The first ball stops after the collision. Find the velocity of the second ball after the collision.
The velocity of the second ball after the collision is 8.00 m/s. The velocity of the second ball is the same as the first ball after the collision.
What is the collision?
In physics, collision, which is also known as impact, is the abrupt, forceful coming together in close proximity of two bodies, such as two pool cues, a golf club and a ball, a hammer and a nail, two railroad cars when coupled, or a falling object and a floor.
Given that the initial velocity of the first ball is u₁ = 8. 00 m/s.
The mass of the ball is m₁ = 4.0 kg.
The final velocity of the first ball is v₁ = 0 m/s
The initial velocity of the second ball is u₂ = 0 m/s.
The mass of the ball is m₂ = 4.0 kg.
The final velocity of the first ball is v₂ = ? m/s
The formula of collision is
m₁u₁+m₂u₂ = m₁v₁+m₂v₂
Now putting the values:
4.0×8.00 + 4.0×0 = 4.0×0 + 4.0×v₂
4.0×8.00 = 4.0×v₂
v₂ = 8.00 m/s
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What voltage is applied to a 20 ohm fixed resistor if the current through the resistor is 1. 5 amps?
The voltage applied to a 20 ohm resistor can be calculated using Ohm's Law. Ohm's Law states that the voltage (V) is equal to the current (I) multiplied by the resistance (R), which can be represented by the equation V = IR.
To find the voltage applied to a 20 ohm resistor with a current of 1.5 amps, we simply substitute the values into the equation: V = 1.5 * 20 = 30 Volts. [1]. The result, 30 Volts, is the voltage applied to the 20 ohm resistor when the current through the resistor is 1.5 amps.
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Define east as the negative direction and west as the positive direction. Which of the following statement is FALSE?
a) If a car is traveling east, its acceleration must be eastward.
b) If a car is slowing down, its acceleration may be positive
c)An object with constant nonzero acceleration can never stop and stay stopped
d)The velocity of a car must stop momentarily if it has to change direction
Define east as the negative direction and west as the positive direction. The false statement is:
a) If a car is traveling east, its acceleration must be eastward.
About Acceleration
Acceleration is a change in speed per unit time. This acceleration is a vector quantity that has both magnitude and direction.
Acceleration is also divided into decelerated acceleration and accelerated acceleration.
Acceleration is decelerated which means that the direction of acceleration is opposite to the direction of velocity.
Meanwhile, the acceleration is accelerated, which means the acceleration is in the same direction as the speed.
Acceleration will be negative if the speed of an object can decrease within a certain time interval.
While the acceleration which is positive will increase over a certain time interval.
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How much work must be done to stretch this spring by 0. 050 m from its unstretched length?
Work done to stretch the string is 0.039 J.
Given F = [tex]kx - bx^{2} +cx^{3}[/tex]
Where, k = 100 N/m
b = 700 N/m^2
c = 12000 N/m^3
We know that , W = Fx
where, F = force and x = displacement
Taking integrals on both sides we get:
W = [tex]\int\ {F} \, dx[/tex]
W = [tex]\int\ {kx - bx^{2} + cx^{3} } \, dx[/tex]
Integrating under proper limits we get:
W = [tex]\frac{kx^{2}}{2} - \frac{bx^{3}}{3} +\frac{cx^{4}}{4}[/tex]
Given x = 0.05 m
Putting these values in above equation we get:
W = 0.39 J
Work is the product of the component of the force in the direction of the displacement and the magnitude of this displacement.
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a commuter backs her car out of her garage with a constant acceleration of 1.2 m/s2. assume that her initial motion is in the positive direction.
A) It will take 1.53 seconds does it take her to reach a speed of 2.00 m/s.
B) If she then brakes to a stop in 0.8 second, her (constant) deceleration is -2.5 m/s^2.
Acceleration:
Acceleration is a vector because it must be specified as magnitude along with direction. One-dimensional motion uses negative and positive signs to indicate direction. So if the sign is negative, the object is slowing down.
Deceleration:
Deceleration is the opposite of acceleration. Deceleration is calculated by dividing the final velocity minus the initial velocity by the time it takes for this velocity to drop. Here the acceleration formula can be used with a negative sign to determine the deceleration value.
(A) Here the car's initial velocity (u) is 0 m/s as it is at rest and the final velocity (v) is 2 m/s. The acceleration (a) of the car is 1.30 m/s^2. Use the first equation of motion to get the time taken (t).
v = u + at
⇒ 2m/s = 0 m/s + (1.30m/s²) t
⇒ t = [tex]\frac{2m/s}{1.30m/s^2}[/tex]
⇒ t = 1.53 second
(B) For this the car's initial velocity (u) is 2 m/s as it is in motion and the final velocity (v) is 0 m/s. The time taken (t) to reach the final velocity is 0.8 s. Use the first equation of motion to get acceleration (a).
v = u + at
⇒ 0 m/s = 2 m/s + a(0.8s)
⇒ a = [tex]\frac{(0-2)m/s}{0.8s}[/tex]
⇒ a = -2.5 m/s²
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where might you see remote controls with each type of battery arrangement
The batteries in a remote control aeroplane are typically set up in parallel to maximise the current. Remote controllers with both series and parallel battery configurations may be employed in a number of settings.
The majority of remote controls use AAA and AA batteries. Manufacturers frequently sell these items with subpar, weak zinc carbon batteries that quickly lose their charge. Because the batteries in a TV remote are connected in series, the device will not function if one cell is dead or missing. A battery is a collection of at least two cells. The arrangement of the cells should be such that the positive terminal of one cell is coupled with the negative terminal of the following cell.
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When removing a wool sweater, a static discharge of 7.00 µc dissipates 1.00 ✕ 10−3 j of energy. what voltage (in v) was involved?
The required voltage while a static discharge dissipates certain amount of energy is calculated to be 142.85 V.
The voltage is also defined as the ratio or the fraction of the energy measured in joules to the per-unit charge measured in Coulomb.
The energy is given as 1× 10⁻³ J.
The charge q is given as q = 7 µc = 7× 10⁻⁶ c
The expression for energy is given as,
E = q v
where, E is energy
v is voltage
q is charge
Making v as subject, we have,
v = E/q = (1× 10⁻³)/(7× 10⁻⁶) = 1000/7 = 142.85 V
Thus, the voltage in volts is calculated as 142.85 V.
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When you accelerate to avoid a collision, which step in the ipde process are you using?
"Executive" is the step in the IPDE process you are using to accelerate to avoid a collision. The IPDE process contains four steps.
What is the IPDE Process?IPDE process is an approach stand for Identify, Predict, Decide, and Execute. To deal with potential and real hazards while driving, we employ the IPDE approach. The IPDE process contains four steps, those are:
1. Identify
Identify means that a driver must look ahead and locate a hazard (such as traffic lights or children) and pay close attention to them. Which is why car's windows must be clean.
2. Predict
Predict is when a driver foresees where points of conflict can develop in a driving situation. A driver must predict what will happen if he comes across a real or potential hazard.
3. Decide
A driver must decide exactly what they will do to drive safely and avoid the hazards. This involves carefully planning the actions and ensuring that the path is clear to proceed.
4. Execute
Execute is when you accelerate to avoid a collision. The decision is carried out by a driver.
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a sprinter runs at 9.2 m/s around a circular track with a centripetal acceleration of 3.8 m/s2. what is the radius of the track?
The required radius of the track when velocity of the sprinter is given is calculated to be 22.27 m.
Centripetal acceleration is a characteristic of an object's motion along a circular path. Centripetal acceleration applies to any object travelling in a circle with an acceleration vector pointing in the direction of the circle's centre.
The velocity of the sprinter v = 9.2 m/s
Centripetal acceleration a is given as 3.8 m/s²
Radius of the track = ?
The expression for centripetal acceleration is:
a = v²/r
Making radius as subject,
r = v²/a = (9.2)²/3.8 = 22.27 m
Thus, the radius of the track is calculated to be 22.27 m.
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Using GRASP, How much does it cost to operate a 90 W light bulb for one day if the cost per kilowatt-hour is $0.08?
It would cost $0.0072 to operate a 90 W light bulb for one day if the cost per kilowatt-hour is $0.08.
What is GRASP?To solve this problem using the GRASP method, we need to first determine the energy used by the light bulb, then multiply by the cost per kilowatt-hour to find the cost to operate the bulb.
Gather: We are given the power of the bulb (90 W) and the cost per kilowatt-hour ($0.08).
Relate: We need to convert the power of the bulb to kilowatt-hours, which is the unit of energy used in electricity billing.
1 kilowatt-hour = 1000 watt-hours
So, 90 W = (90/1000) kilowatt-hours = 0.09 kilowatt-hours
Apply: We now have the energy used by the bulb and can calculate the cost to operate the bulb for one day.
Cost = energy x cost per kilowatt-hour = 0.09 kilowatt-hours x $0.08 = $0.0072
So, it would cost $0.0072 to operate a 90 W light bulb for one day if the cost per kilowatt-hour is $0.08.
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which of the following is not a property of electric field lines? multiple choice question. they can cross each other. the electric field is strongest where the lines are closest. they start on positive charges. they end on negative charges
The statement "they can cross each other" is not a property of electric field lines.
Electric field lines are a graphical representation of the electric field. They are used to visualize the electric field and to understand the behavior of electric charges. Electric field lines originate from positive charges and end on negative charges, representing the direction of the electric field. The electric field is strongest where the lines are closest, meaning that the electric field is stronger in regions where the lines are packed tightly together. This is because the electric field is proportional to the number of lines per unit area. However, electric field lines cannot cross each other. This is because the electric field must always be a continuous and well-defined quantity, and if the lines cross each other, it would be ambiguous as to the direction of the electric field in that region.
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a sphere has a net charge of -4.8 x 10-17 c. how many excess electrons are there on the sphere?
The relationship between charge, number of electrons, and charge per electron, we can calculate the number of excess electrons on the sphere. In this case, the calculation shows that there are [tex]3 x 10^18[/tex] excess electrons on the sphere.
The number of excess electrons on the sphere can be calculated as follows:
charge = number of electrons * charge per electron
Rearranging this equation and substituting the given values:
number of electrons = charge / charge per electron = [tex]-4.8 x 10^-17 C / (1.6 x 10^-19 C/electron) = -3 x 10^18[/tex] electrons
Since the sphere has a net charge of [tex]-4.8 x 10^-17 C[/tex], there are[tex]3 x 10^18[/tex]excess electrons on the sphere.
A sphere is a three-dimensional object with a uniform distribution of charge. The total charge on the sphere is determined by the number of electrons it contains and their individual charges. In this case, the sphere has a net charge of [tex]-4.8 x 10^-17 C[/tex], meaning that it has an excess of electrons compared to protons.
The charge per electron is a constant value, equal to[tex]1.6 x 10^-19 C[/tex]. This means that for every electron, there is a charge of [tex]1.6 x 10^-19 C[/tex]associated with it.
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Earth carries a net charge of about -5×10−5 C. How many more electrons are there than protons on Earth?
Earth carries a net charge of about -5×10−5 C. 10 and many more electrons are there than protons on Earth.
What is electron?
It is possible for an atom to have an attached or detached electron, a negatively charged subatomic particle (not bound). The electron, along with protons and neutrons, is one of the three main particle types found inside an atom. Atomic nuclei are composed of protons, neutrons, and electrons.
What is proton?
In the nucleus of every atom, there is a proton, a subatomic particle. Though going in the opposite direction from the electron, the particle has a positive electrical charge. The mass of an isolated proton, which is almost equal to that of a neutron, is just 1.673 x 1027 kg.
Therefore, earth carries a net charge of about -5×10−5 C. 10 and many more electrons are there than protons on Earth.
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how far is 1500 meters
1500 meters is approximately equivalent to 1.5 kilometres or 4,921 feet.
We can convert 1500 metres into kilometres by:
1 km = 1000 metres
Therefore, 1500/1000 = 1.5 kilometres
What do you mean by SI unit?The SI unit (International System of Units) is the world's most widely used system of measurement. It is a decimal system of units and is based on seven base units for seven base quantities.
What are the seven base SI units?The seven base units of the SI system are meter (m) for length, kilogram (kg) for mass, second (s) for time, mole (mol) for the amount of substance, kelvin (K) for temperature, ampere for current and for luminous intensity candela (cd).
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1500 meters is equivalent to approximately 0.93 miles or 1.5 kilometer.
What is kilometer ?Kilometer (km) is a unit of length in the metric system, equal to one thousand meters (1,000 m). It is often used to measure the distance between two locations, such as the length of a road or the distance between two cities. Kilometers are also used to measure the speed of an object or vehicle, usually in kilometers per hour (km/h). For example, the maximum speed limit on some highways in the United States is 65 miles per hour (mph), which is equal to 104.6 kilometers per hour (km/h). Kilometers are also used to measure the size of a country, such as the total area of the United States, which is approximately 9.8 million square kilometers.
To convert from meters to miles, divide the number of meters by 1609. To convert from meters to kilometers, divide the number of meters by 1000.
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What is the net of a force?
The vector sum of all forces exerted on an object is the net force. A force is a vector and that two forces of equal magnitude and opposite direction will cancel each other out, the net force is the sum of all the forces.
Is there no net force?The vector sum of all forces exerted on an object is the net force. The net force exerted on an object is zero when it is in equilibrium (at rest or moving at a constant velocity). If all of a vector's components are zero, it can only have a magnitude of zero.
What is the formula for net force?The acceleration of the object will be greater the greater the net force acting on it. These connections are summarized by Newton's second law of motion. Rewriting the above acceleration equation to account for net force yields the following solution: Mass times acceleration equals net force, or F = m/a.
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Identify the factors that affect the frequency and the period of a vibrating mass on a spring. For each factor having an effect, describe the effect (e. G. , state something like. "As the_____ increases , the period _____ and the frequency _____ ")
The factors that affect the frequency and the period of a vibrating mass on a spring are mass of the object, spring constant, amplitude of vibration, damping force, and initial conditions.
There are several factors that affect the frequency and period of a vibrating mass on a spring, including:
Mass of the object: As the mass of the object increases, the period increases and the frequency decreases.Spring constant: As the spring constant increases, the frequency increases and the period decreases.Amplitude of vibration: The amplitude of vibration does not affect the frequency of vibration, but it does affect the period. As the amplitude of vibration increases, the period remains constant.Damping force: As the damping force increases, both the frequency and the period decrease.Initial conditions: The initial conditions, such as the initial displacement and velocity of the mass, can also affect the frequency and period of vibration. However, these factors are specific to a particular scenario and can be difficult to predict without a full understanding of the system's behavior.To learn more about damping force visit: https://brainly.com/question/14931820
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What is the direction of the electric field at the dot?a. Ab. Bc. Cd. De. None of the above
Option E. The direction of the electric field at the dot in the diagram is "None of the above." Electric field lines are used to represent the direction of the electric field and the magnitude of the field is proportional to the density of the lines.
The diagram you provided does not have enough information to determine the direction of the electric field at the dot, as the electric field lines have not been shown. In order to determine the direction of the electric field at a point, you would need a complete representation of the electric field in the region, including the electric field lines and any charges that are causing the field. the electric field is a field that describes the force experienced by a charged particle due to the presence of other charged particles or electric charges. The electric field is represented by electric field lines, which are lines that show the direction of the electric field at any given point.
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What is the direction of the electric field at the dot?
a. A
b. B
c. C
d. D
e. None of the above
when an object gets charged by rubbing, where does the electric charge originate?
The transmission of electrons from one item to another occurs during rubbing. When electrons are transferred from a body, that body loses electrons and gains a positive charge.
What happens when rubbing charges an object?
Friction is the movement of electrons between two things when they are brushed against one another. When a thing loses an electron, it becomes positively charged; when it gains an electron, it becomes negatively charged.
What is electron transmission?
A technique used to examine the features of incredibly small objects is transmission electron microscopy (TEM). A scientist can see features like structure and morphology using the technology, which involves an accelerated electron beam that passes through a very thin specimen.
The primary distinction between SEM and TEM is that the former produces images by detecting reflected or knocked-off electrons, whereas the latter produces images by using transmitted electrons (electrons that are traveling through the material).
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the tanker jet is flying at a constant speed of 360 km/hr and initially 10 km ahead of the receiver jet. the receiver jet is initially flying at a speed of 360 km/hr and needs to catch up with the tanker jet. the receiver jet can accelerate and decelerate at a maximum magnitude of 1.05g, where g is the gravitational acceleration and equals 9.8 m/sec/sec. determine the minimum amount of time, in seconds, taken by the receiver jet to catch up with the tanker jet. write your answer rounded to the closest second.
The minimum amount of time taken by the receiver jet to catch up with the tanker jet is 100 seconds, rounded to the nearest second.
Let's assume that the receiver jet accelerates at the maximum rate (1.05g) until it reaches the same speed as the tanker jet, and then coasts for the rest of the journey.
The time taken for the receiver jet to reach the same speed as the tanker jet can be calculated using the following formula:
t = v / a
where
v = final speed - initial speed
a = acceleration (1.05g)
The initial speed of the receiver jet is 360 km/hr = 100 m/s. The final speed is the same as the tanker jet, which is 360 km/hr = 100 m/s.
So, v = 100 m/s - 100 m/s = 0
a = 1.05 * 9.8 m/s^2 = 10.29 m/s^2
t = v / a = 0 / 10.29 m/s^2 = 0 s
Since the receiver jet reached the same speed as the tanker jet in zero seconds, it will continue to fly at a constant speed of 100 m/s for the rest of the journey. The distance that the receiver jet needs to cover can be calculated as follows:
d = v * t
where
v = 100 m/s (speed of the receiver jet)
t = time taken to cover the distance (to be calculated)
Since the tanker jet was initially 10 km ahead of the receiver jet, the distance that the receiver jet needs to cover is 10 km = 10,000 m.
t = d / v = 10,000 m / 100 m/s = 100 s
So, the minimum amount of time taken by the receiver jet to catch up with the tanker jet is 100 seconds, rounded to the nearest second.
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determine the pressure of the gas if the atmospheric pressure is 98.4 kpa and the height of the manometer reads 330 mm.
The pressure of the gas if the atmospheric pressure is 98.4 kpa and the height of the manometer reads 330 mm is 408mm Hg.
In the physical sciences, pressure is defined as the stress at a point within a confined fluid or the perpendicular force per unit area. A 42-pound box with a bottom area of 84 square inches will impose pressure on a surface equal to the force divided by the area it is applied to, or half a pound per square inch. Atmospheric pressure, which is roughly 15 pounds per square inch at sea level, is the weight of the atmosphere pressing down on each unit area of the Earth's surface. Pascals are used to express pressure in SI units; one pascal is equivalent to one newton per square metre. Nearly 100,000 pascals of atmospheric pressure are present.
Given [tex]P_{atm}[/tex]= 98.4KPa = 738mm Hg
Difference in height of Hg coloum= 330 mm
[tex]P_ {column}[/tex]= 330 mm Hg
Pressure in gas= [tex]P_{atm}[/tex] -[tex]P_{manometer}[/tex]
Pressure of gas = 738mm Hg -330mm Hg
Pressure of gas=408mm Hg
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What is the velocity of a 16.3 kg car moving with 85 J of energy?
Answer:
Velocity is 10.429 m/s
Explanation:
Assume a car is moving from rest at point A to point B through a distance r.
We know that workdone is product of force and distance moved;
[tex]{ \bf{ \triangle w = f \triangle r}} [/tex]
- Integrating both sides;
[tex] { \bf{ \int \triangle w = f \int^{r_{2}}_{r_{1} } \triangle r}} \\ \\ { \bf{w = (ma) \{r _{2} - r _{1} \}}} \\ \\ { \bf{w = (m \times \frac{ {v}^{2} }{2r}) \times (r) }}[/tex]
The step above comes from Newton's third law, where initial velocity is zero, since car is from rest, and r1 is zero
[tex]{ \bf{w = (m \times \frac{ {v}^{2} }{2}) \times \frac{r}{r} }} \\ \\ { \boxed{ \rm{workdone = \frac{1}{2}m {v}^{2} }}}[/tex]
Therefore;
[tex]{ \rm{85 = \frac{1}{2} \times 16.3 \times {v}^{2} }} \\ \\ { \rm{ {v}^{2} = \frac{2 \times 85}{16.3} }} \\ \\ { \rm{v = \sqrt{( \frac{2 \times 85}{16.3} } )}} \\ \\ { \rm{v = 10.429 \: ms {}^{ - 1} }}[/tex]
all the following statements are true. which one explains the reason that there is not a solar eclipse at every new moon?
It takes the moon about a month to orbit the Earth. We would experience two eclipses each month if the moon's orbit was in the same plane as the ecliptic, which is Earth's orbital plane. Thus, option C is correct.
What absence of solar eclipse at every new moon?At every full moon, the moon would be eclipsed. About a week later, there would be a solar eclipse with the new moon as well, bringing the yearly total of eclipses to at least 24.
But it doesn't, and the reason is that by around 5 degrees, the moon's orbit around Earth is inclined to that of the Earth around the sun.
Doesn't the fact that a new moon happens when the moon is between the earth and the sun also imply that a solar eclipse will occur somewhere on Earth.
Therefore, The orbital plane of the Moon is tilted slightly (by about 5 degrees) to the ecliptic plane.
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The given question is incomplete. The complete question is given below:
All the following statements are true. Which one explains the reason that there is not a solar eclipse at every new moon?
A.) The Moon is only about 1/4 as large as Earth in diameter.
B.) The Moon goes through a complete cycle of phases about every 29 1/2 days.
C.) The orbital plane of the Moon is tilted slightly (by about 5 degrees) to the ecliptic plane.
D.) The nodes of the moon's orbit precess with an 18-year period.
It takes the moon about a month to orbit the Earth. We would experience two eclipses each month if the moon's orbit was in the same plane as the ecliptic, which is Earth's orbital plane. Thus, option C is correct.
What absence of solar eclipse at every new moon?At every full moon, the moon would be eclipsed. About a week later, there would be a solar eclipse with the new moon as well, bringing the yearly total of eclipses to at least 24.
But it doesn't, and the reason is that by around 5 degrees, the moon's orbit around Earth is inclined to that of the Earth around the sun.
Doesn't the fact that a new moon happens when the moon is between the earth and the sun also imply that a solar eclipse will occur somewhere on Earth.
Therefore, The orbital plane of the Moon is tilted slightly (by about 5 degrees) to the ecliptic plane.
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The given question is incomplete. The complete question is given below:
All the following statements are true. Which one explains the reason that there is not a solar eclipse at every new moon?
A.) The Moon is only about 1/4 as large as Earth in diameter.
B.) The Moon goes through a complete cycle of phases about every 29 1/2 days.
C.) The orbital plane of the Moon is tilted slightly (by about 5 degrees) to the ecliptic plane.
D.) The nodes of the moon's orbit precess with an 18-year period.
what is the nature of the force between balls a and b?
Considering how enticing both charges are. Only when applied over very small distances and at the level of subatomic particles do the weak and strong forces take control.
What does a scientific force mean?A clear meaning is attached to the word "force." The terms "push" and "pull" are perfectly acceptable at this level to describe forces. An object does not contain any force inside of it either within it. Other element applies pressure to the first.
How would you describe force to a young child?A push or pull constitutes a force. The motion of an item can occasionally be changed by forces, which also generate motion. Every object is drawn toward the center of the Earth by gravity, for instance.
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positive charge of q coulombs is uniformly spread over a large flat surface of area 8.43 meters squared. what would q need to be to make the magnitude of the electric field 0.00562 meters away from the surface equal to 5.85 n/c?
q would need to be 3.26 x 10^-7 Coulombs to make the magnitude of the electric field 0.00562 meters away from the surface equal to 5.85 n/C.
The magnitude of the electric field at a point near a flat charged surface is given by:
E = Q / (4 * pi * epsilon_0 * A)
where E is the electric field magnitude, Q is the charge, epsilon_0 is the vacuum permittivity, A is the area of the charged surface, and d is the distance from the surface.
We can rearrange the equation to solve for Q:
Q = E * (4 * pi * epsilon_0 * A)
Plugging in the given values:
Q = 5.85 nC * (4 * pi * 8.85 x 10^-12 C^2/N m^2 * 8.43 m^2)
Q = 3.26 x 10^-7 C
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a sample of a gas occupies 250. ml at 1.00 atm of pressure. if the pressure increases to 2.00 atm while the temperature stays the same, what is the new volume?
The new volume of the gas is 500. ml at 2.00 atm of pressure.
The relationship between pressure, volume, and temperature of a gas can be described by the ideal gas law, which states that PV = nRT, where P is pressure, V is volume, n is the number of moles of gas, R is the gas constant, and T is temperature (in Kelvin).
Since the temperature remains constant, we can assume that the number of moles of gas and the gas constant are also constant. So, we can rearrange the equation to solve for volume: V = nRT / P.
Substituting the given values, we have: V = nRT / 2.00 atm, and V = nRT / 1.00 atm. Dividing these two equations gives us:
V2 / V1 = (2.00 atm) / (1.00 atm) = 2
So, the new volume (V2) is equal to the original volume (V1) multiplied by 2:
V2 = V1 * 2 = 250. ml * 2 = 500. ml is the new volume.
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4. Assuming that this is a perfect inelastic
collision, calculate the velocity after the
collision in the example below.
BEFORE
m-80 kg
v=6 m/s
m= 40 kg
v=0 m/s
AFTER
m-80 kg
V=?
m 40 kg
V=?
Answer: 72
Explanation: just cuz
a paddle boat can move at a speed of 2 km/h in still water. the boat is paddled 4 km downstream in a river in the same time it takes to go 1 km upstream. what is the speed of the river?
Speed of river = 1.6 km/h
Speed of river = (4 km - 1 km) / Time
Time = (4 km + 1 km) / 2 km/h
Time = 5/2 hours = 2.5 hours
Speed of river = (4 km - 1 km) / 2.5 hours
Speed of river = 1.6 km/h
What is speed?
Speed is a measure of how quickly an object is moving. It is the rate of change in the object's position over a period of time. It is usually measured in units such as meters per second, kilometers per hour, or miles per hour. Speed is a scalar quantity, meaning it only requires a magnitude to describe it. It is different from velocity, which is a vector quantity, meaning it requires both a magnitude and a direction to describe it. Speed affects the time it takes to travel a given distance, and is also a factor in acceleration and deceleration. Speed is a fundamental concept in physics, and is used to calculate the kinetic energy of an object.
Therefore, Speed of river = 1.6 km/h
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f the enthalpy of steam at 45 degrees celsius is 2100 kj/kg, what is its entropy in
The entropy of steam at 45 degrees celsius is [tex]6.744 kj/kgK.[/tex]
This can be calculated from the steam tables, which contain the thermodynamic properties of steam at various pressures and temperatures. It is a thermodynamic property that describes the amount of energy that is unavailable to do work. The entropy is calculated from the enthalpy and temperature of the steam. In this case, the enthalpy of 2100 kJ/kg and the temper
ature of 45 degrees celsius are used to calculate the entropy. The equation used to calculate the entropy is:
[tex]S =\frac{ H}{T}[/tex]
Where S is the entropy, H is the enthalpy and T is the temperature.
Therefore,
[tex]S = \frac{2100}{45}\\ \\ = 46.67 kJ/kgK.[/tex]
Therefore, the entropy of steam at 45 degrees celsius is [tex]6.744 kJ/kgK[/tex]
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complete question:IF the enthalpy of steam at 45 degrees celsius is 2100 kj/kg, what is its entropy in kj/kgK
Pleae compare and contrat a wind vane and an anemometer. Be ure to include what they each meaure, how doe each one work, and what information meteorologit collect from the wind vane and a anemometer
A wind vane and an anemometer are both instruments used to measure wind speed and direction.
A wind vane measures wind direction by pointing in the direction from which the wind is coming. It typically consists of a lightweight vane attached to a pivot that rotates to align with the wind direction. The wind vane can provide information about the general trend of wind direction but does not provide information about wind speed.
An anemometer, on the other hand, measures wind speed. There are several types of anemometers, but the most common type consists of four cups or vanes attached to a central rotating shaft. As the wind blows, it turns the cups or vanes, and the speed at which they rotate is proportional to the wind speed. The speed can then be measured using an attached mechanism, such as a dial or digital readout.
Meteorologists use the information provided by wind vanes and anemometers to understand the patterns and behavior of wind in a given location. Wind direction and speed are important factors in weather forecasting and the study of atmospheric processes.
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