The center of mass is usually near the middle of the suitcase and about halfway up its height and at a height that allows you to maintain good balance and control while running.
For a carry-on suitcase,. Keeping the center of mass low and close to your body can help reduce the amount of effort required to carry the suitcase, as well as improve stability and control while running.
When running with a suitcase, it's important to keep your upper body as upright and relaxed as possible, while allowing your legs and arms to move freely. This will help you maintain balance and reduce the strain on your muscles and joints. Additionally, it's helpful to grip the handle of the suitcase firmly, but not too tightly, so that you have control over its movement.
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how much more time (in terms of t1) does it take the ladybug to get back to its starting point from the place where it reverses its acceleration?
[tex]T_{1}+\sqrt{2 }T_{1}[/tex] is the time (in terms of [tex]T_{1}[/tex]) does it take the ladybug to get back to its starting point from the place where it reverses its acceleration
The following is a roughly formula-free, Physics-focused solution. The velocity continues to move incorrectly even when the acceleration [tex]T_{1}[/tex]changes. By symmetry, the ladybug is at rest after an additional period and is twice as far from its starting point as it was before it applied the brakes.
As a result, it must now go twice as far. Under constant acceleration, the distance traveled is proportional to the square of the time. Consequently, the amount of time needed to return to the starting location from the farthest point reached is 2–[tex]\sqrt{T_{1} }[/tex]. Total time from the time the acceleration reversed is therefore [tex]T_{1}+\sqrt{2 }T_{1}[/tex].
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Can we see a source of light through a bent tube? Explain your your answer
Because a curved tube is not an homogeneous medium, we cannot perceive a light source through it. Hence the tube should have a straight, homogeneous medium so that the source of the light can be seen.
What does light mean in the Bible?Light has always represented righteousness, kindness, wisdom, understanding, grace, hope, and the revelation of God in the Bible. On the other side, darkness has been associated with sin, evil, and hopelessness.
What exactly is God's light?Aspects of the divine presence that are felt as light in theophany or visions, or that are depicted as such in allegorical or metaphor, are referred to as divine light in theology.
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if i double the length, and halve the radius of a copper wire, what is the value of its new resistance? original resistance was r0
The new resistance of the copper after doubling the length and reducing the radius will be 8 times of the original resistance.
Resistance can be defined as the property of the conductor which opposes the flow of electric current. Resistance is also defined as the ratio of the voltage applied to the electric current flowing through the circuit.
R = ρl/ A
where, R is the electric circuit,
ρ is the resistivity or specific resistance,
l is the length of the wire,
A is the cross-sectional area of the wire.
If we double the length of copper wire and reduce the radius to half. Then, the new resistance will be:
R = ρl/ A
l' = 2l
r' = r/2
A = πr²
A' = π(r/2)²
A' = πr²/4
R' = new resistance,
R' = ρ ×2l/ πr²/4
R' = 4 × ρ ×2l/ πr²
R' = 8ρl/ A
Therefore, the new resistance will be 8 times of the original resistance.
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a refracting telescope has a magnification m. if the focal length of the objective lens is doubled and the eyepiece focal length is halved, what is the new magnification?
The required new magnification of the telescope when the focal lengths of objective lens and eye-piece are given is calculated to be four times that of original magnification.
We know the expression for magnification as, m = -fo/fe
where,
The objective lens's focal length is fo
fe is the focal length of eye piece
It is given that, focal length of the objective lens is doubled.
⇒ fo₂ = 2 fo
It is given that, focal length of the eye piece is doubled.
⇒ fe₂ = 1/2 fe
So, the new magnification is,
m' = -fo₂/fe₂ = - 2 fo/(1/2 fe) = -4 fo/fe = 4 m
Thus, the required new magnification is calculated to be four times that of the original magnification.
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suppose electric current is going through a 960 ohm resistor and you use a voltmeter to measure a potential difference of 4.98 volts across the two terminals of the resistor. what must be the current in amperes going through this resistor?
The current in amperes going through this resistor is 0.005208 Amperes or 5.208 mA.
Ohm's law is one of the most fundamental laws of electrical engineering. It states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance between them. Mathematically, the relationship is given by the equation: I = V / R, where I is the current in amperes, V is the voltage in volts, and R is the resistance in ohms.
In our example, we are given a resistor with a resistance of 960 ohms and a potential difference (voltage) of 4.98 volts across its two terminals. We need to divide the voltage by the resistance to find the current flowing through the resistor. Using the equation I = V / R, we have: I = 4.98 volts / 960 ohms = 0.005208 Amperes or 5.208 milliamperes.
So, the current flowing through the 960-ohm resistor is 5.208 milliamperes.
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The desorption of a single molecular layer of n-butane from a single crystal of aluminum oxide was found to be first order with a rate constant of 0. 128/s at 150 K. The half life of the reaction is 5. 41sPart BIf the surface is initially completely covered with n-butane at 150 K, how long will it take for 25% of the molecules to desorb?Part CFor 50% to desorb?Part DIf the surface is initially completely covered, what fraction will remain covered after 14s ?Part EAfter 20s ?
It was discovered that the rate of desorption of a single molecular layer of n-butane from a single crystal of aluminum oxide was first order. constant of 0. 128/s at 150 K , Half life=[tex]\frac {ln(2)}{k}[/tex]=5.415 s
For first order desorption:
In([tex]\frac {N}{N_o}[/tex]) =-kt and [tex]\frac {N}{N_o}[/tex] = [tex]e^{(-kt)[/tex] where N is the number of molecules remaining at time t, No is initial number and k is rate constant
(A) Half life=[tex]\frac {ln(2)}{k}[/tex]=5.415 s
(B) 25% desorbs [tex]\rightarrow[/tex] 75% remains
⇒ [tex]\frac {N}{N_o}[/tex] x 100% = 75% => [tex]\frac {N}{N_o}[/tex]=0.75
In(0.75)=-0.128 x t
Time t = 2.25 s
(C) 50% desorbs ⇒ 50% remains
=> [tex]\frac {N}{N_o}[/tex] x 100% = 50% => [tex]\frac {N}{N_o}[/tex]= 0.50
In(0.50) = -0.128 x t
Time t = 5.42 S
(D) For t = 14 s
Fraction remaining= [tex]\frac {N}{N_o}[/tex] =[tex]e^{(-0.128 \times 14)[/tex]
Fraction remaining= -0.167 (approximately 0.17)
(E) For t = 20 s
Fraction remaining= [tex]\frac {N}{N_o}[/tex] = [tex]e^{(-0.128 \times 20)[/tex]
Fraction remaining= -0.0773 (approximately 0.077)
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2.81 A certain volcano on earth can eject rocks vertically to a maximum height H. (a) How high (in terms of H) would these rocks go if a volcano on Mars ejected them with the same initial velocity? The acceleration due to gravity on Mars is 3.71 m/s², and you can neglect air resistance on both planets. (b) If the rocks are in the air for a time T on earth, for how long (in terms of 7) will they be in the air on Mars?
a) Rocks reach height 26.4 times maximum height they could reach on Earth b) rocks will be 0.753 times duration they would be in the air on Earth
(a) Max height H reached by a projectile launched vertically upward on Earth is given by:
[tex]H = v^{2} / (2g),[/tex]
where v₀ : initial velocity and g: acceleration due to gravity on Earth. To find height reached by same projectile launched with same initial velocity on Mars, we can use same formula but with the value of g on Mars:
[tex]H = v^{2} / (2g),[/tex]
where gₘ is the acceleration due to gravity on Mars. We know that initial velocity of the rocks is the same on both planets, so we can write:
[tex]H = H * g / g[/tex]
Put values:
[tex]H = H * 9.81 m/s^{2} / 3.71 m/s^{2} = 26.4 * H[/tex]
Therefore, the rocks ejected from the volcano on Mars would reach a height that is 26.4 times the maximum height they could reach on Earth.
(b) The time T for the rocks to be in the air on Earth can be found using the formula:
[tex]T = 2v / g[/tex].
To find time the rocks would be in air on Mars, we use same formula but with the value of g in terms of Mars:
[tex]T = 2v / g[/tex]
Put values:
[tex]T = 2v / 3.71 m/s^{2} = 2/ (9.81 m/s^{2} / 3.71 m/s^{2} ) * (2v / 9.81 m/s^{2} )[/tex]
[tex]Tm = (2/2.652)*T[/tex]
[tex]Tm = 0.753 * T[/tex]
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which of the following describes a hypothesis? multiple choice question. any information we collect about the physical universe using our senses an explanation that has been proven correct a general principle that is derived from hundreds of observations and experiments a tentative explanation for a natural phenomenon
A tentative explanation for a natural phenomenon describes hypothesis .
A straightforward hypothesis can indicate that there is a causal relationship—that is, that one variable affects the other—between two variables. Here's an illustration: Higher grades are the result of more time spent preparing for a test. The number of hours spent studying is the independent variable in this statement, and the result is the dependent variable. The independent variable is altered while the dependent variable is evaluated to ascertain how the dependent variable is impacted by the independent variable. Similar to a simple hypothesis, a complex hypothesis has two or more independent variables and/or two or more dependent variables.
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the side wall of a dam with width 70 m is a quarter circle with radius of 7 m. when the dam is full, calculate the hydrostatic force on the dam in n and its line of action.
The required hydrostatic force on the dam when width and the radius of the dam are given is calculated to be 31284956.29 N.
It is given that width of the dam is 70 m.
Radius of the circle is 7 m.
The height of the dam will be equal to the half of its radius.
h = r/2 = 7/2 = 3.5 m
Area is given by the formula, A = r ω
where,
ω is width
r is radius
Volume is given as, V = ω πr²/4
Horizontal force is given by, Fx = ρ g h A = 1000× 9.8× 7/2× 7× 70 = 16807000 N
Vertical force Fy = ρ g V = 1000 × 9.8 × 70 × π 7²/4 = 98× 7000× 49π /4 = 26386990 N
The resultant of vertical and horizontal force is nothing but the hydrostatic force.
F = √(Fx² + Fy²) = √(16807000² + 26386990²) = √(282475249000000+696273241260100) = 31284956.29 N
Thus, the hydrostatic force on the dam in N is calculated to be 31284956.29 N.
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oppositely charged parallel plates are separated by 5.96 mm. a potential difference of 600 v exists between the plates. (a) what is the magnitude of the electric field between the plates?
The magnitude of the electric field between the oppositely charged parallel plates is 100,336 N/C.
The electric field (E) between the parallel plates can be calculated using the following formula:
E = V / d
where V is the potential difference between the plates and d is the separation distance between the plates.
In this case, the potential difference is 600 V and the separation distance is 5.96 mm = 0.00596 m.
So, the magnitude of the electric field between the plates can be calculated as:
E = 600 V / 0.00596 m = 100,336 N/C
Therefore, the magnitude of the electric field between the oppositely charged parallel plates is 100,336 N/C.
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a ball is thrown horizontally from the roof of a building 45 m building and lands 105 m from the base od the building, what is the velocity just before it hits the ground
The velocity of the ball just before it hits the ground is 35 m/s.
What is velocity?
Velocity is a vector quantity that describes the rate of change of an object's position in a specific direction. It is defined as the derivative of an object's position with respect to time. Mathematically, velocity is expressed as:
v = Δx / Δt
The velocity of the ball just before it hits the ground can be calculated using the concept of projectile motion. In this case, we have two components of motion: horizontal and vertical. The horizontal component is constant and equal to the initial velocity, while the vertical component is affected by gravity and follows a parabolic path.
We can use the following equation to find the time it takes for the ball to fall from the roof to the ground:
h = vi * t + 0.5 * g * t²
where h is the height of the building (45 m), vi is the initial velocity (which we are trying to find), g is the acceleration due to gravity (9.8 m/s²), and t is the time it takes for the ball to fall.
Since the ball lands 105 m from the base of the building, we can also use the horizontal component of the motion to find the time:
d = vi * t
where d is the horizontal distance traveled by the ball (105 m).
We can equate these two equations to eliminate time and find the velocity of the ball:
h = vi * (d/vi) + 0.5 * g * (d/vi)²
45 = 105 + 0.5 * 9.8 * (d/vi)²
(d/vi)² = 2 * h / g = 2 * 45 / 9.8 = 9.18
d/vi = 3
vi = d / 3 = 105 / 3 = 35 m/s
So, the velocity of the ball just before it hits the ground is 35 m/s.
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what is the relationship between the voltage across a resistor and capacitor when the resistor and capacitor are in series and are powered by a voltage source
The voltage across the resistor and capacitor will be the same. This is because the voltage source is supplying the same voltage to both components, and since the same amount of current is passing .
What is the voltage ?Voltage is a measure of electrical potential energy per unit charge. It is measured in volts (V). Voltage is an important factor in the functioning of electric circuits. It determines the amount of current that will flow in a circuit. A higher voltage will cause more current to flow through the circuit, while a lower voltage will cause less current to flow. Voltage is also related to power, as the electrical power is equal to the product of the voltage and current. the same amount of current is passing through both components, the voltage drop across each component must be equal.
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what is the orbital period, to the nearest hundredth of a year, of an asteroid has a major axis length of 5.07 a.u.
The orbital period of the asteroid to the nearest hundredth of a year is 34.43 years.
The orbital period of an asteroid is given by the formula T = 2 × pi × (a³ / G × M)^(1/2). To find the orbital period, we need to calculate T using the given values for a, G, and M.
a = 5.07 a.u.
G = 6.67 x 10⁻¹¹ N × m² / kg²
M = 1.989 x 10^30 kg
T = 2 × pi × (a³ / G × M)^(1/2)
T = 2 × pi × (5.07³ / 6.67 x 10⁻¹¹ × 1.989 x 10³⁰)^(1/2)
T = 2 × pi × (156.9837 / 6.67 x 10⁻¹¹ × 1.989 x 10³⁰)^(1/2)
T = 2 × pi × (1.8048 x 10¹² / 6.67 x 10⁻¹¹ × 1.989 x 10³⁰)^(1/2)
T = 2 × pi × (1.8048 x 10¹² / 1.38 x 10⁻²³)^(1/2)
T = 2 × pi × (1.30 x 10³⁵)^(1/2)
T = 2 × pi × (3.66 x 10¹⁷)^(1/2)
T = 2 × pi × 1.91 x 10⁹
T = 12.57 x 10⁹
T = 12.57 / 365.25
T = 34.43 years
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A student pulls on a cart and applies a 20N force at an angle of 25 degrees above the horizontal to move a crate a distance of 10m across a rough floor that creates a frictional force of 2N. (A) Draw a FBD (B) How much work does the student do? (C) What is the total work done? (D) If the cart starts at rest how fast is it going after 10m?
2.4 Displacement of 27m north,31 m east,63m south and 58m west. Take east as the positive x-direction and north as the positive y-direction. 3. Check 2.4 with an accurate tail to head vector diagram
The resultant displacement of the object is 45 m.
What is the displacement of the object?
The resultant displacement of the object is calculated as follows;
Sum of the vertical displacement of the object is calculated as;
y = 27 m - 63 m = -36 m
Sum of the horizontal displacement of the object is calculated as;
x = 31 m - 58 m = -27 m
The resultant displacement of the object is calculated as follows;
d = √ [ ( -36² ) + ( - 27² ) ]
d = 45 m
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The complete question is below;
2.4 Displacement of 27m north,31 m east,63m south and 58m west. Take east as the positive x-direction and north as the positive y-direction. 3. Check 2.4 with an accurate tail to head vector diagram. Calculate the resultant displacement of the vector
if a car moving at 90 mi/h takes 300 ft to stop with uniform acceleration after its brakes are applied, how far will it take to stop under the same conditions if its initial velocity is 45 mi/h ?
If the car is initially moving at a speed of 45 mi/h and it takes 300 ft to stop with uniform acceleration after its brakes are applied, it will take 600 ft to stop under the same conditions.
This is because the deceleration is the same, but the initial velocity is halved.
Acceleration is the rate of change of velocity of an object with respect to time. It is a vector quantity which is defined as the rate of change of an object's velocity and is usually represented by the symbol a. Acceleration can be caused by a variety of factors, including external forces, changes in direction, or changes in speed. In physics, acceleration can be described as the rate of change of an object's velocity over a period of time.
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the difference in point of view that occurs when the lens (or other device) through which the eye views a scene is separate from the lens that exposes the film is called
The difference in point of view that occurs when the lens (or other device) through which the eye views a scene is separate from the lens that exposes the film is called the parallax effect.
What is parallax effect?Parallax effect is an interactive technique used by web developers to create a visually engaging experience for users. It works by having the background move at a slower speed than the foreground when the user scrolls down the page. This creates an illusion of depth, as if the user is looking into the scene from different angles. The effect is especially popular for creating immersive experiences such as 3D games, virtual tours, and interactive storytelling. Parallax effect can be used to bring websites to life, offering users an engaging and dynamic experience. It is also a great tool for storytelling, helping to convey emotion and create a unique visual experience.
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(q1) two charged spheres are 10.68 cm apart. they are moved, and the force on each of them is found to have been tripled. how far apart are they now?
The spheres are now 6.08 cm apart. The force between two charged spheres is proportional to the product of their charges and inversely proportional to the square of the distance between them.
This means that if the force is tripled, the distance between the spheres must have been reduced by a factor of the square root of 3. To find the new distance, we can use the formula:
d_new = d_old / √3
Where d_old is the original distance of 10.68 cm and d_new is the new distance. Plugging in the values, we get:
d_new = 10.68 cm / √3 = 6.08 cm
So, the spheres are now 6.08 cm apart.
In this case, F_old / F_new = 1/3, since the force has been tripled. Plugging in the original distance of 10.68 cm and the value for F_old / F_new, we can calculate the new distance. The final result shows that the spheres are now 6.08 cm apart.
This result shows how the force between charged spheres is directly influenced by the distance between them. Understanding this relationship is important in many fields, including physics, electrical engineering, and materials science.
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Make A CER about this Question --> as an asteroid collided with Earth in the ancient past and what were the effects of this collision? PLEASE HELP PLEASE PLEASE PLEASE PLEASE PLEASE !
It is widely believed that an asteroid impact was responsible for the extinction of the dinosaurs and many other species, which took place approximately 65 million years ago.
What are the effects of collision of the asteroids?The exact effects of this collision would have been massive, including:
A massive shockwave that would have caused widespread destruction and firesA tsunamis that would have flooded coastlinesA massive release of dust and debris into the atmosphere, blocking out the sun and causing a cooling of the planetA release of massive amounts of heat and energy, which would have caused massive fires and further atmospheric disruption.These events likely had a significant and long-lasting impact on the Earth's environment and ecology, and led to one of the largest mass extinctions in Earth's history.
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examining your graph, how would you describe the relationship between vapor pressure and temperature? is it linear? explain this relationship in terms of the kinetic energy of the molecules.
The pressure that a gas, at a constant temperature, exerts over a liquid surface is known as vapour pressure. Since the kinetic energy of molecules increases with temperature, vapour pressure likewise rises.
As a result, more molecules possess the necessary energy to transform from a liquid to a gas.
The pressure that a gas, at a constant temperature, exerts over a liquid surface is known as vapour pressure. Due to the fact that more molecules have adequate kinetic energy to transition from a liquid to a gas as the temperature rises, the vapour pressure likewise rises.
A liquid or solid's vapour pressure increases along with its temperature. On the other hand, when the temperature drops, the vapour pressure drops.
There are several techniques to calculate a liquid's vapour pressure. A little amount of the liquid is injected into a closed flask that is attached to a manometer for a straightforward measurement.
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What is the gauge pressure of the water right at the point p, where the needle meets the wider chamber of the syringe? neglect the pressure difference caused by the radius change?
The gauge pressure at point P, which has a zero-reference against the atmospheric pressure, is 3200 Pa. The needle meets the wider chamber of the syringe at the end of the needle.
Using Poiseuille's law, we can resolve the exercise. In a closed pipe, it states that for a fluid in laminar flow.
The equation:
ΔP = 8μLQ / 4r⁴
Where,
μ = viscosity of the fluid
L = length of the pipe
r = radius
Q = Av
= πr²v
= (3.14 x 10⁻³) (10)
= (3.14 x 10⁻⁵)
Hence, the gauge pressure:
ΔP = 8 (0.001) (4 cm) (3.14 x 10⁻⁵)) / 4 (0.001 m)⁴
= 3200 Pa
So, the gauge pressure of the water at point P is 3200 Pa.
And, the needle meets the wider chamber of the syringe at the end of the needle.
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how far (in cm) from a piece of paper must you hold your father's 1.80 d reading glasses to try to burn a hole in the paper with sunlight?
To burn a hole in a piece of paper with sunlight using your father's 1.80 D reading glasses, you must hold the glasses about 6 cm away from the paper.
This is because the glasses will act as a magnifying lens, and the focal length of the lens is determined by the diopter number (1.80 in this case). The focal length of a 1.80 D lens is approximately 6 cm.
The focal length of a lens is the distance between the lens and the image sensor when the subject is in focus, usually stated in millimeters (e.g., 28 mm, 50 mm). The focal length determines the angle of view of the lens, and thus how much of the scene will be captured when the image is taken.
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The volume of a monatomic ideal gas triples in an isothermal expansion. By what factor does its pressure change?
In an isothermal expansion, the pressure of a monatomic ideal gas increases by a factor of 1/3 (or 2/3).
What is ideal gas?A collection of presumptions about a gas's behavior defines, it as an ideal gas in theory. These hypotheses, which are based on experimental observations of actual gases, are helpful for comprehending and forecasting the behavior of gases under diverse circumstances.
The temperature of the gas doesn't change during an isothermal expansion. In the equation of state for an ideal gas, PV = nRT, where n is the number of moles, R is the universal gas constant, and T is the temperature, pressure and volume are connected.
The pressure of a monatomic ideal gas will change by a factor of 1/3(2/3) if its volume triples. This can be obtained by maintaining a constant temperature and changing the equation of state to P = (nRT) / V.
Since the pressure and volume are inversely related, the pressure will fall by a factor of 1/3 (or 2/3) if the volume triples.
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assume that the collision in each scenario is elastic. a graph of the magnitude of the force exerted on cart y as a function of time for scenario 1 is shown. during which interval of time does the magnitude of the momentum of cart y change the most?
During 0.004s to 0.006s interval of time does the magnitude of the momentum of cart y change the most.
What is momentum?Momentum (more particularly linear momentum , translational momentum) is defined in Newtonian physics as the product of an object's mass and velocity. It consists of a vector quantity with magnitude and direction. If an object's mass is m and its velocity is v (also a vector quantity).
The kilogram metre per second (kgm/s) is the unit of momentum measurement in the International System of Units (SI), which really is equivalent to the newton-second. During 0.004s to 0.006s interval of time does the magnitude of the momentum of cart y change the most.
Therefore, during 0.004s to 0.006s interval of time does the magnitude of the momentum of cart y change the most.
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at 20!c, a brass cube has edge length 30 cm. what is the in- crease in the surface area when it is heated from 20!c to 75!c?
The increase in surface area when the temperature rises from 20 to 75 degrees Celsius. = 11cm².
What transpires as the temperature rises?Heat waves will probably occur more frequently and persist longer as a result of the higher temperatures. Heat waves can be deadly, leading to conditions like heat cramps and heat stroke as well as actual mortality. Additionally, warmer temperatures have the potential to trigger a variety of other changes all around the world.
What is the name for rising temperatures?A fever is defined as a rise in body temperature above what is regarded as normal. It's also known as a high temperature, hyperthermia, or pyrexia, and it typically indicates that your body is attempting to protect you from an infection.
According to the given information:The increase in the surface area of the brass cube (which has six faces), which had side length L at 20 o, is
Δ A - 6(L - ΔL)² - 6L²
12LΔL = 12abL²ΔT
= 12(19 x 10⁻⁶/c)(30cm)²
=(75c - 20c)
= 11cm²
The increase in surface area when the temperature rises from 20 to 75 degrees Celsius. = 11cm².
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what is the only way to be sure that the power is off in a system, circuit, or equipment?
The one and only way to ensure that power off in a system, circuit, or piece of equipment is to measure the voltage with a known working meter.
What is meant by power off in a circuit?Turn off the power in the circuit by selecting it with the circuit breaker on the electrical panel. Place the voltmeter on the two output points at the bottom of the circuit breaker to ensure that the power is turned off. If the light does not illuminate, the voltmeter will indicate that there is no voltage.When the circuit switch is turned off, no electricity flows, and the circuit is said to be open.An electric switch is an appliance that disrupts the flow of electrons in a circuit. Light switches have a simple design and are primarily binary devices: they are either fully on or fully off. The circuit is broken and the power flow is interrupted when the switch is turned off.To learn more about electric circuit refer to :
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joe and bob needed to move a trunk with a mass of 75kg the trunk is too heavy to life so the boys slide it 12 meters to the waiting truck. the coefficient of sliding friction between the trunk and the floor is 0.20 the entire task is accomplished in 13 seconds
weight of truck:
how much force is excerted on the truck:
how much work is done to move the trunk:
what is the power exerted:
The weight of the trunk is 735 N
The force of friction is 147 N
The force exerted on the trunk is 882 N
The work done to move the trunk is 10,584 J
The power exerted is 814 W
How to calculate?The weight of the trunk can be calculated as :
Weight = 75 kg * 9.8 m/s^2 = 735 N
The force of friction can be calculated as:
Friction = μ * N = 0.20 * 735 N = 147 N
The force exerted on the trunk can be calculated as :
Force = Weight + Friction = 735 N + 147 N = 882 N
The work done to move the trunk can be calculated as
Work = Force * Distance = 882 N * 12 m = 10,584 J
The power exerted can be calculated as :
Power = Work / Time = 10,584 J / 13 s = 814 W.
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you are called to the scene of an overturned tanker truck. arriving at the scene, you notice a fluid draining from the underside of the truck. you use your binoculars to look on the placard on the back of the vehicle so that you can identify the material from your:
Northern American Emergency Response Guide.The main goal of the ERG Handbook is to help first responders immediately identify any unique or general risks associated with the material(s) at issue.
What does ERG guide 111 entail?There is also Guide 111, which is for "hazardous" materials.When using generic information, make sure to replace it with more detailed instructions as soon as new information becomes available.
What is the number on my ERG Guide?The orange panel next to the diamond-shaped sign or on the extremities and sides of the a cargo tank, vehicle, or rail car may also display the 4-digit ID Number.
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Fill The Blank? the rate of diffusion is ___________ related to concentration, temperature, and pressure meaning that an increase in concentration, temperature, or pressure results in an ___________ in the rate of diffusion.
The rate of diffusion is directly related to concentration, temperature, and pressure meaning that an increase in concentration, temperature, or pressure results in an increase in the rate of diffusion.
This is because diffusion is a process where particles move from an area of high concentration to an area of low concentration, driven by a concentration gradient. As the concentration gradient increases, more particles move from the high concentration area to the low concentration area, resulting in a faster rate of diffusion.
Temperature also affects the rate of diffusion because it affects the kinetic energy of the particles. At higher temperatures, particles have more kinetic energy and move faster, leading to a higher rate of diffusion.
Pressure affects the rate of diffusion because it affects the concentration gradient. An increase in pressure can compress the gas and increase the concentration gradient, resulting in a higher rate of diffusion.
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a car with initial velocity 30.0 m/s decelerates with constant acceleration -5.0 m/s2 until the car comes to a stop. how far does the car travel before it comes to rest?
The car travels 90m before it comes to rest.
Distance is the total movement of an object without any regard to direction. We can define distance as how much ground an object has covered despite its starting or ending point.
Velocity (v) is a vector quantity that measures displacement (or change in position, over the change in time.
Acceleration is defined as the rate of change of velocity with respect to time.
The initial velocity is 30.0 m/s.
The acceleration is [tex]-5.0\ m/s^2[/tex].
The car comes to a stop. Hence the final velocity is 0 m/s.
Using the third equation of motion,
[tex]v^2 - u^2=2as[/tex]
Substituting the values,
[tex]0^2 - 30^2=2(-5)s[/tex]
The value of s is 90m.
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