Sonar (SOund Navigation And Ranging) uses sound waves to estimate water depth. It operates by producing a sound wave and monitoring how long it takes for the wave to bounce back after striking the ocean floor. The depth of the water may be determined based on this time measurement.
What is SONAR?Sonar is a technology for navigating, measuring distances, communicating with, or detecting things on or beneath the water's surface, such as other vessels. Sonar (from "sound navigation range") is an acoustic technology for detecting and estimating the distance and direction of underwater objects. Sonar equipment detects and analyzes sound waves generated or reflected by the item for the information they convey. sonar.
Here,
Sonar (SOund Navigation And Ranging) does utilize sound waves to estimate water depth. It operates by sending out a sound wave and monitoring how long it takes for the wave to bounce back after reaching the ocean floor. The depth of the water may be determined using this time measurement.
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Patrick walks 70 m south in 150 seconds. He then walks 20 meters east in 30 seconds. What is his average velocity for the trip?
Group of answer choices
0.35 m/s southeast
0.27m/s southeast
0.41 m/s southeast
0.66 m/s southeast
Patrick's average velocity for the trip is 0.41 m/s along southeast.
What is velocity?The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.
Resultant displacement of Patrick = √(70² +20²) meter southeast
= 72.801 meter southeast.
Total time interval = 150 second + 30 second = 180 second
Hence, his average velocity for the trip is = resultant displacement/ Total time interval
= 72.801 meter ÷ 180 second
= 0.41 m/s along southeast
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if the voltage between two points is zero, can a test charge be moved between them with a zero network being done? can this necessarily be done without exerting a force? how can you explain?
No, a test charge cannot be moved between two points with a zero voltage.
What is voltage?Voltage is an electrical potential energy difference between two points in an electric field. It can be measured in volts, and describes the amount of energy available to move electric charges from one point to another.
This is because a voltage of zero implies that the electric potential between the two points is the same. Since the electric potential is the same at both points, the electric field strength between them is also the same. This means that any test charge placed in the field will experience no force and will not be able to move. In order to move the test charge, an external electric field must be applied to the two points, which will create a voltage difference between them and result in a force being exerted on the test charge, allowing it to move.
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what is the linear charge density of a thin wire bent into a circle (or ring) of radius 6.59 cm if the total charge on the wire is 3.20 µc? give your answer in µc/m.
The required value of linear charge density of a thin wire bent into a circle is 0.00077 μc/m.
The wire is curved into a circular form.
The radius of the circle is given as R = 6.59 cm = 6.59 × 10⁻² m
The total charge on the wire Q = 3.2 µc = 3.2 × 10⁻⁶ c
The relation between total charge, radius and linear charge density is known as,
Q = 2 π R α
where, Q is the total charge
R is the radius of the wire bent into a circle
α is linear charge density
Making α as subject, we have,
α = Q /(2 π R) = (3.2 × 10⁻⁶)/(2 π ×6.59 × 10⁻²) = (3.2 × 10⁻⁶)/(41.41 × 10⁻²) = 0.077 × 10⁻⁴ c/m = 0.00077 μc/m
Thus, the value of linear charge density of a thin wire is calculated to be 0.00077 μc/m
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Find the range of speeds that your system can have without having the rope break or the ice water leave the bucket Mass of Bucket and Water: 1.28 kg Radius of Circle: 1.23 m Strength of Rope: 179 N
If speed s as well as rate r are identical, then r = s = d/t. You can substitute d = rt, which stands for "distance equals rate times time," in place of the this formula. Use the speed formula, s = d/t.
which states that speed is equal to distance divided by time, to answer either speed or rate. Use the time formula, t = d/s, which asserts that time is equal to distance divided by speed, to solve for time.
Use the speed formula, s = d/t, which stipulates how speed is equal to distance divided by time, to calculate either speed or rate. Use the time formula, t = d/s, which stipulates because time is equal to distance divided by speed, to solve for time. Companion Calculators Strength is a metric that is misunderstood. Tensile strength will be dragged up through one boater.
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Which of the following statements about specific heat capacity is true?
Group of answer choices
A. Specific heat capacity is the amount of heat per unit mass required to raise the temperature of a substance by one Kelvin (or degree Celcius)
B. Specific heat capacity is the same per unit mass for any substance.
C. Specific heat capacity defines the relationship between heat and density for a given substance.
D. The SI unit used to measure specific heat capacity is expressed as calories per gram degrees Celsius (cal/g °C)
Specific heat or specific heat capacity of a body is the amount of heat required for a unit mass of body to raise the temperature by 1 degree Celsius
What is Specific heat capacity ?The ease with which a material's temperature varies when it loses energy can be described using specific heat capacity. A lot of energy is required to adjust the temperature of materials with high specific heat capacity.
The composition of a body affects its specific heat, specific heat can be calculated using the provided heat energy. Hence The rise in temperature has no bearing on specific heat.
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In heather's physics class, she had to solve the equation 7=12at2+ut for u. Which equation correctly solves for u?.
In heather's physics class, she had to solve the equation 7=12at2+ut for u. The correct answer is B.
A formula known as an equation uses the equals sign to express how two expressions are equal. Finding the values of the variables that result in the equality is the first step in solving an equation with variables.
The unknown variables are also known as the variables for which the equation must be solved, and the unknown variable values that fulfill the equality are known as the equation's solutions.
The equation 7 = 1/2 at² + ut can be solved as follows:
7 = 1/2 at² + ut
First we can subtract 1/2 at² from each side
7 -1/2 at² = 1/2 at² + ut - 1/2 at²
7 -1/2 at² = ut
Then we must divide by t
(7 -1/2 at²)/t = ut/t
Then we can solve it
(7 -1/2 at²)/t = u
Your question is incomplete the missing option attached below
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Which description includes a scalar quantity?
Group of answer choices
Louis used a force of 5 Newtons.
Michael weighed 170 pounds before the match.
Jason rode his bicycle at 10 m/s to the east.
Ryan walked for 3 minutes.
Jason rode his bicycle at 10 m/s to the east is a scalar quantity.
What is Scalar quantity?
It is possible to express in words how an object moves. There are many terminologies that can be used to describe moving objects, even for those without a background in physics.
A adequate vocabulary for expressing the motion of objects is provided by words and expressions like "moving quickly," "stopped," "slowing down," "speeding up," and "turning."
We will add terms like distance, displacement, speed, velocity, and acceleration to this vocabulary list.
Therefore, Jason rode his bicycle at 10 m/s to the east is a scalar quantity.
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calculate approximately the total translational kinetic energy of all the molecules in an e. coli bacterium of mass 2.0×10−15kg at 37 ∘c . assume 70% of the cell, by weight, is water, and the other molecules have an average molecular mass on the order of 105u .
Total translational kinetic energy = 4.7 x 10-19 J
Total mass = 2.0 x 10-15 kg
Amount of water = 0.7 x 2.0 x 10-15 kg = 1.4 x 10-15 kg
Amount of other molecules = 0.3 x 2.0 x 10-15 kg = 6.0 x 10-17 kg
Average molecular mass of other molecules = 105 u
Number of other molecules = 6.0 x 10-17 kg / (105 u/6.022 x 1023) = 1.3 x 10-20 mol
Average translational kinetic energy of an e. coli bacterium = (3/2) kT
= (3/2) x 8.31 J/molK x 310 K
= 362.68 J/mol
Total translational kinetic energy = 1.3 x 10-20 mol x 362.68 J/mol
= 4.7 x 10-19 J
What is kinetic energy?
Kinetic energy is the energy of a moving object, which is equal to the work done to accelerate the object from rest to its current velocity. It is directly proportional to the mass of the object and to the square of its velocity.
Therefore, Total translational kinetic energy = 4.7 x 10-19 J
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How much heat is released if a 10.0-gram piece of aluminum is cooled from 70 degrees Celsius to 50 degrees Celsius?a. +200 Jb. +180 Jc. -200 Jd. -180 J
The amount of heat released is 180J if a 10.0-gram piece of aluminum is cooled from 70 degrees Celsius to 50 degrees Celsius
Given the mass of aluminum (m) = 10g
The initial temperature (T1) = 70°C
The final temperature is (T2) = 50°C
The specific heat of aluminum is (C) = 0.9J/g°C
We know that q = mcΔT where q is the heat released.
Specific heat, the amount of energy needed to raise a substance's temperature by one degree Celsius in one gram.
q = 10 x 0.9 x (70 - 50)
q = 180J
Hence the heat released when the temperature of aluminum is decreased is 180J
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To directly lift a crate 0. 6 meters, joaquin would need to apply 312 newtons of force. Instead, he uses a lever with a mechanical advantage of 3 to lift the crate. How much force does he save by using the lever?.
Joaquin reduces his force by using the lever by applying 208 N of force.
By using a lever with a mechanical advantage of 3,
Joaquin needs to apply only 1/3 of
The force he would need to lift the crate directly.
This means he needs to apply only 312 N / 3 = 104 N.
Therefore, Joaquin saves
312 N - 104 N = 208 N of force by using the lever.
The force amplified by utilising a tool, mechanical device, or machine system is known as mechanical advantage. To achieve the necessary output force amplification, the gadget trades off input forces against movement. The law of the lever serves as a paradigm for this.
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Which one of the following statements is true concerning the strength of the electric field between two oppositely charged parallel plates?a. It is the same everywhere between the plated if any edge effect is ignored.b. It is a maximum near the negatively charged plate.c. It is a maximum near the positively charged plate.d. It is a maximum midway between the plates.
The statement that is true concerning the strength of the electric field between two oppositely charged parallel plates is : It is the same everywhere between the plates if any edge effect is ignored. Option A. is the correct answer.
What is strength of electric field?This refers to a quantity used to express the intensity of an electric field at a particular location. The standard unit is the volt per meter (V/m or V·m-1). A field strength of 1 V/m represents a potential difference of 1 V between points separated by 1 meter. It is also called electric field intensity.
strength of the electric field is calculated using the formula :
E = F/q
Where,
E = strength of the electric field
F = Force in Newton
q = Charge in Columbus
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Referring to the sketch of a planet around the sun, Area Als three times that of Area B. Compare the times required for
the planet to travel from Point 1 to Point 2 and from Point 3 to Point 4 and select the letter of the correct answer
At it nine timesta
Atat equal to At
At it three times to
Atsis three times A
stis nine time to
Referring to the sketch of a planet around the sun, Area A is three times that of Area B the time [tex]t_{a}[/tex] is three times [tex]t_{b}[/tex] .
The orbit of an object is its course through space. Kepler first believed that planets' orbits were circular, but this incorrect assumption prevented him from discovering orbits that were consistent with Brahe's observations. He ultimately learned from the data for Mars that its orbit resembled an elliptical version of a slightly flattened circle. The ellipse is the most basic closed curve after the circle and is a member of the conic section family of curves.
This characteristic proposes a quick method for creating an ellipse. Two tacks are inserted into a drawing board through a sheet of paper, and the ends of a loop of string are wrapped around them to create slack by a planet.
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What is the approximate tangential speed of an object orbiting Earth with a radius of 1.8 x 108 m and a period of 2.2
x 104 s?
O 7.7 x 10-4 m/s
O 5.1 x 10 m/s
7.7 x 104 m/s
5.1 x 105 m/s
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In the case where the period is 2.2 x 104 s, the rotational speed is given by 1 / 2.2 x 104 = 4.55 x 10-5 rad/s. Utilizing the equation v = r, we can find the tangential speed. in which the rotating speed is
The linear or tangential speed is denoted by v.
r stands for radius. The result is that v = 4.55x10-5(1.8x108), or 5.1 x 104 m/s.
A sentence's object is defined as what?To refer to the item or person that is the target of an action, we typically use the word "object." Alternatively, the recipient. In a sentence, a verb's action is transferred to a noun or pronoun as a direct object. Usually, it responds to the inquiries what or whom. relating to the verb.
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What is 85 degrees Celsius in Fahrenheit?
The formula for converting temperature 85 degrees Celsius to Fahrenheit is a linear function: [°F] = ([85] x 9 5) + 32. As a result, we get: 85 C to F = 185 °F
What exactly is temperature?
Temperature, like any other physical quantity, is defined as the measurement of the warmth or coldness of a substance or object in relation to some standard value. Temperature, while used to express hot and cold conditions, is usually measured with a thermometer marked in several temperature scales, the most common of which are Celsius and Fahrenheit. There are a variety of other temperature units.
What is the SI Temperature Unit?
The SI unit of temperature is Kelvin, which is represented by the symbol K in the International System of Units. The Kelvin scale is widely accepted or used in science and engineering. Temperature is usually measured in degrees Celsius or Fahrenheit in most parts of the world.
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What is needed for states of matter to change phase?
For a substance to change phase, it must either gain or lose thermal energy.
This can be achieved in several ways, including:
Heating or cooling: When a substance is heated, its temperature increases, causing the molecules to move faster and eventually overcome the intermolecular forces holding them in place. This leads to a change in phase, such as from solid to liquid or from liquid to gas. Conversely, cooling a substance can cause its molecules to slow down and solidify.
Pressure: Changing the pressure on a substance can also cause it to change phase. Increasing the pressure on a gas will cause it to condense into a liquid, while decreasing the pressure can cause a liquid to boil and become a gas. Similarly, changing the pressure on a solid can cause it to change into a liquid or gas.
Evaporation: When a liquid is heated, some of its molecules will escape into the surrounding air and become a gas, a process called evaporation.
The specific conditions required for a substance to change phase will depend on the substance's unique properties, including its boiling point, melting point, and vapor pressure.
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calculate the spring constant and its uncertainty
k = - F/x = - (2 0.05 N) / (25 0.05 cm) = - (2 0.05 N) / (0.25 0.0005 m) = - 8.0 N/m 2.7 is the value of the spring constant. The spring's stiffness is indicated by the spring constant, k.
If the data are not independent, there are statistical techniques for calculating the standard deviation uncertainty.
But in general, this is far more challenging. There are academic articles and books on it.
But at this point in my life, my skills in this area have deteriorated, and I am beyond help.
And unless you are enrolled in a course on the subject of error propagation and sensitivity, I guess it is also beyond what you wish to do.
See:
2) Sensitivity and Doubt
The spring constant is therefore best calculated as follows: k = - F/x = - (2 0.05 N) / (25 0.05 cm) = - (2 0.05 N) / (0.25 0.0005 m) = - 8.0 N/m 2.7%
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the enthalpy of 36 g g of water vapor increases by 1830 j j when its temperature increases from 150∘c ∘ c to 175∘c ∘ c . assume that water vapor is an ideal gas.
The enthalpy of 36 g g of water vapor increases by 1830 j j when its temperature increases from 150∘c to 175∘c is 1830 J.
The enthalpy of 36 g of water vapor increases by 1830 J when its temperature increases from 150°C to 175°C. Assuming water vapor is an ideal gas, the change in enthalpy can be calculated using the following equation:
ΔH = Cp * m * ΔT
Where Cp is the specific heat capacity of the gas, m is the mass of the gas, and ΔT is the change in temperature. In this case, Cp = 1.88 J/g°C, m = 36 g, and ΔT = 25°C. Therefore, the change in enthalpy is:
ΔH = 1.88 * 36 * 25 = 1830 J.
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A 62. 1 kg runner has a speed of 4. 70 m/s at one instant during a long-distance event. What is the kinetic energy (in j) of the runner?.
The kinetic energy of the runner is: 685.89 Joules
What is kinetic energy?
It is the energy possessed by a body due to its relative motion. It is usually expressed in Joules (J).
The kinetic energy formula and the procedure we will use is:
K.E. = 1/2 * m * v²
Where:
v = speedm = massJoules = Kg m²*s²Information of the problem:
v = 4.70 m/sm = 62.1 kgK.E=?Applying kinetic energy formula we get:
K.E. = 1/2 * 62.1 kg * (4.70 m/s)²
K.E. = 1/2 * 62.1 kg * 22.09 m²/s²
K.E. = 685.89 kg*m²/s²
K.E. = 685.89 Joules
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Why does sodium chloride conduct electricity when it is molten or in its aqueous form?
Sodium chloride conducts electricity when it is molten or in its aqueous form because it dissociates into ions, (Na+) and (Cl-), which are free to move and carry electrical charge. The movement of these ions creates an electric current and allows for the flow of electricity.
What is electric current?Electric current is the flow of electric charge through a material, usually a conductor such as a metal wire. It is often measured in amperes (A) and is a measure of the rate at which electric charge flows through a circuit. The flow of electric charge is due to the movement of electrons in a conductor and is what enables the transfer of electrical energy from one point to another.
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differentiate the function. f(u) = e4/u
Answer:
-( 4 *e^4 /u )/u^2
Explanation:
d/du(e^4/u)= -( 4 *e^4 /u )/u^2
After differentiating the function we get,
[tex]\large f'(u)=\frac{-4}{u^2}*e^\frac{4}{u}[/tex].
What is differentiation?
Apart from integration, differentiation is one of the two key ideas of calculus. A technique for determining a function's derivative is differentiation. Mathematicians use a procedure called differentiation to determine a function's instantaneous rate of change based on one of its variables. The most typical illustration is velocity, which is the rate at which a distance changes in relation to time. Finding an antiderivative is the opposite of differentiation.
The rate of change of x with respect to y is given by dy/dx if x and y are two variables. The universal representation of a function's derivative is given by the equation f'(x) = dy/dx, where y = f(x) is any function.
[tex]f(u)=e^\frac{4}{u}[/tex]
[tex]\large f'(u)=e^\frac{4}{u}*\frac{d(4/u)}{du}[/tex]
[tex]\large f'(u)=\frac{-4}{u^2}*e^\frac{4}{u}[/tex]
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you are driving with a speed of 85 mile/hour in interstate 10 from phoenix toward los angeles, when you see a large piece of debris 128m ahead on the highway. you push the brake pedal as hard as you can to try to avoid the collision. if the brake provides an acceleration of -8.50 m/s2, how far will the car go before stopping? can you avoid hitting the debris? a ball is thrown vertically downward with an initial speed of 15.8 m/s from a building whose height is 122 m. how long does it take for the ball to strike the ground? k.t. tsen
The debris is 128 m ahead, the car will hit the debris
4.36 s it take for the ball to strike the ground.
To find the distance the car will travel before stopping, we can use the formula for distance under constant acceleration:
d = v0 * t + (1/2) * a * t^2
where v0 is the initial velocity (85 miles/hour = 38.05 m/s), a is the acceleration (-8.5 m/s^2), and t is the time it takes to stop.
We can rearrange this equation to solve for t:
t = (-v0 ± √(v0^2 + 2ad)) / a
where the negative sign is used since the acceleration is negative (meaning the car is slowing down).
Plugging in the values, we get:
t = (-38.05 ± √(38.05^2 + 2(-8.5)(128))) / -8.5
t = (4.17 s)
Next, we can use this time to calculate the distance the car will travel:
d = v0 * t + (1/2) * a * t^2
d = 38.05 * 4.17 + (1/2) * -8.5 * 4.17^2
d = 159.47 m
Since the debris is 128 m ahead, the car will hit the debris.
To find the time it takes for the ball to strike the ground, we can use the formula for vertical motion under constant acceleration:
h = v0 * t + (1/2) * a * t^2
where h is the height of the building (122 m), v0 is the initial velocity (15.8 m/s), a is the acceleration due to gravity (-9.8 m/s^2), and t is the time it takes to fall.
We can rearrange this equation to solve for t:
t = √(2h / a) = √(2 * 122 / -9.8) = 4.36 s.
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jupiter currently orbits the sun at 5 au. could jupiter retain an atmosphere of hydrogen molecules if you could magically move jupiter to 0.5 au from the sun? why or why not? explain your answer.
Yes, Jupiter could hold on an atmosphere of hydrogen molecules if you moved it to 0.5AU from the Sun because the gas velocity of hydrogen of 2691 m/s is less than the escape velocity of Jupiter of 9916 m/s.
What is Escape velocity ?Escape velocity is the minimum speed that an object must have in order to overcome the gravitational pull of a planet or moon and escape into space. It is a measure of the strength of the gravitational field at a given distance from the center of a celestial body.
The escape velocity is determined by the mass and radius of the planet or moon, and it increases as the mass and radius of the celestial body increase. For example, the escape velocity of Earth is about 11.2 km/s, while the escape velocity of Jupiter is about 60 km/s, due to its much larger mass and radius compared to Earth.
Therefore, Yes, Jupiter could hold on to an atmosphere of hydrogen molecules if you moved it to 0.5AU from the Sun because the gas velocity of hydrogen of 2691 m/s is less than the escape velocity of Jupiter of 9916 m/s.
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the acceleration due to gravity near the surface of mars is about one-third of the value near the earth's surface. if a rock fell for the same amount of time on mars and earth, the speed with which the rock hit the ground on mars would be
The correct option is option E) three times slower than on Earth.
The acceleration due to gravity near the surface of Mars is about one-third of the value near the Earth's surface, which is approximately 3.71 m/s^2. On Earth, the acceleration due to gravity is approximately 9.8 m/s^2.
Gravity is a fundamental force of nature that acts between any two masses. It is what holds the planets in orbit around the Sun, and what keeps the Moon in orbit around the Earth.
The strength of the gravitational force between two objects depends on their masses and the distance between them.
The final velocity of an object falling under the influence of gravity can be calculated using the equation:
vf = vi + g * t
where:
vf = final velocity
vi = initial velocity (assumed to be zero for an object dropped from rest)
g = acceleration due to gravity
t = time of fall
If a rock fell for the same amount of time on Mars and Earth, the final velocity of the rock on Mars would be:
vf = vi + 3.71 m/s^2 * t
and the final velocity of the rock on Earth would be:
vf = vi + 9.8 m/s^2 * t
Since the time of fall is the same in both cases, we can see that the final velocity of the rock on Mars would be one-third of the final velocity of the rock on Earth. So, the speed with which the rock hit the ground on Mars would be lower than the speed with which it hit the ground on Earth.
Therefore, The correct option is option E) three times slower than on Earth.
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at 10 metres/33 feet you’re _____ bar/ata of total pressure and the air density is ___ times as great as at the surface.
At 10 meter / 33 feet total pressure and the air density is 2 times as great as at the surface.
At a depth of 10 meters (33 feet) underwater, the total pressure is approximately 2 bar or 30 pounds per square inch (psi). The air density at this depth is approximately 4 times greater than at the surface, due to the increased pressure. In an underwater environment, the total pressure increases with depth due to the weight of the water column above. This increase in pressure leads to an increase in air density, which affects the behavior of gases and can have an impact on breathing, buoyancy, and other physical processes. It is important to be aware of the effects of pressure and air density changes when diving, as they can have a significant impact on safety and comfort. This is why proper training, equipment, and dive planning are crucial for safe and successful underwater diving.
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Answer:Pressure increases by one bar/ata for every 10 metres/33 feet of depth. So, at 10
metres/33 feet, the total pressure is 2 bar/ata (one from water pressure and one from atmospheric pressure). Density increases proportionally, so at 2 bar/ata the density is 2 times as great, at 3 bar/ata the density is 3 times as great, etc.
Explanation: I took a test and this was the answer
a cyclist rides a bicycle 4.0 km west, then 3.0 km north. what is the cyclists displacement?
The cyclists displacement when he rides a bicycle 4.0 km west, then 3.0 km north is 5km towards north-west.
Given the distance he travels towards west (d1) = 4km
The distance he travels towards north (d2) = 3km
An object's position changes if it moves with respect to a reference frame. Displacement describes this shift in location. The word "displacement" denotes the movement or displacement of an object. The displacement is the shortest distance covered in a certain direction. If we assume the distances he travelled as two sides of triangle then we the displacement which is the hypotenuse side.
So, displacement = √4^2+3^2 = 5km
The direction the cyclist travels is north-west and covers 5km.
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imagine two identical houses, one at the top of a hill and one at the bottom of a valley. in which one would you rather take a shower?
When imagining two identical houses, one located at the top of a hill and the other at the bottom of a valley, it is important to consider several factors before determining which one would be the preferred location to take a shower.
One of the primary factors to consider is the water pressure. Generally, the higher the elevation, the lower the water pressure. If the house at the top of the hill is located at a significantly higher elevation than the house at the bottom of the valley, then it may have lower water pressure, making for a less enjoyable shower experience.
Another factor to consider is the temperature of the water. In some cases, the water temperature can be affected by the location of the house and the proximity to a water source.
In addition to water pressure and temperature, the quality of the shower itself is also an important factor to consider.
This includes the size of the shower, the type of showerhead, and the overall cleanliness and maintenance of the shower. If both houses have identical showers, then this factor becomes less of a concern.
In conclusion, while the location of the house (top of a hill or bottom of a valley) may play a minor role in determining the quality of the shower, it is not the deciding factor.
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A 30 60 caliber hunting rifle fired bullet of ma 0163kg with a velocity of 812 m to the right the rifle ha a ma of 2. 06kg hat i the recoik oeed if thr rifle a fhe bullet leave the rigle
The recoil speed of the hunting rifle is found to be 2.06m/s.
The bullet is fired from the hunting rifle.
The mass of the bullet is 0.163 kg and it is fired at a speed of 812m/s.
The mass of the rifle is 2.06kg.
We know, from the conservation of momentum,
Initial momentum = final momentum
mv = MV
M = mass of rifle
V = recoil speed of the rifle
m = mass of bullet
v = speed of bullet.
Putting values,
0.163 x 812 = 2.06V
V = 6.42 m/s.
So, the recoil speed of the rifle is 6.42m/s.
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Complete question - A 30-60 caliber hunting rifle fired bullet of mass 0.163kg with a velocity of 812 m/s to the right the rifle has a mass of 2.06kg. what is the recoil speed of the rifle after bullet leave the rifle?
Calculate the specific heat capacity of iron when 7.8x10 joules of energy are
transferred to the iron block between 6 and 14 minutes. The mass of the iron block is 2
kg. Give the unit. (4 marks)
kcal/kg specific heat capacity = 5 J/°C.Its 5 J/kg°C specific heat capacity follows from this.
Find specific heat capacity?A substance's specific heat capacity can be determined using the formula below:Inferring the substance's specific heat capacity from this data and the formula above is as follows:
= 5 J/kg °C
where:
C is the specific heat capacity.
Q = thermal energy
m equals material mass
T is the temperature change.
Q = 5200J, m = 2kg, and T = 47 - 42 = 5°C are all values we may deduce from the question.
Inferring the substance's specific heat capacity from this data and the formula above is as follows:
= 5 J/kg °C
Its 5 J/kg°C specific heat capacity follows from this.
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an object starts from 30 m/s velocity and reaches 126 km/h in a 1 km distance. assuming a constant acceleration, what was the elapsed time?
The time elapsed is 30.77 seconds in changing the velocity from 30 m/s to 126 km/h.
Initial velocity, u = 30 m/s
Final velocity, v = 126 km/h = 126 × (5/18) = 35 m/s
Distance travelled, S = 1 km = 1000 m
Let the acceleration, a
By the third equation of motion, v² = u² + 2as
35² = 30² + 2 × a ×1000
a = (35² - 30²)/2000
a = 0.1625 m/s²
Now let the time elapsed is t. Then by the first equation of motion.
v = u + at
t = (v - u)/a
t = (35 - 30)/0.1625
t = 30.77 seconds
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what is the initial velocity of the particle, v0 ?
The initial velocity of the particle is the value of v at t = 0, which is given by the equation v = v0. Therefore, v0 is the initial velocity of the particle. Hence, the initial velocity is 0.5m/s.
Velocity is the rate of change of an object’s position relative to a frame of reference, and is a function of time. It is usually described in terms of the speed and direction of an object's movement. Velocity can be either a vector quantity (having both magnitude and direction) or a scalar quantity (just magnitude). Initial velocity is the velocity of an object at the start of its motion. To calculate the initial velocity of an object, you will need to know the final position, final velocity, acceleration, and time.
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complete question: A common graphical representation of motion along a straight line is the v vs. t graph, that is, the graph of (instantaneous) velocity as a function of time. In this graph, time t is plotted on the horizontal axis and velocity on the vertical axis. Note that by definition, velocity and acceleration are vector quantities. In straight-line motion, however, these vectors have only a single nonzero component in the direction of motion. Thus, in this problem, we will call v the velocity and a the acceleration, even though they are really the components of the velocity and acceleration vectors in the direction of motion, respectively. What is the initial velocity of the particle, v0 ?