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A bullet with a mass of 5.13 g and a speed of 595 m/s penetrates a tree to a depth of 3.93 cm.
(A) Use work and energy considerations to find the average frictional force that stops the bullet.(B) Assuming that the frictional force is constant, determine how much time elapsed between the moment the bullet entered the tree and the moment it stopped.
one mole of oxygen gas is at a pressure of 5.00 atm and a temperature of 26.0degc. a if the gas is heated at constant
A circuit consists of two 495-k? resistors in series with an ideal 12.0-V battery. Calculate the potential drop across one of the resistors. A voltmeter with internal resistance 22 M? is connected in parallel with one of the two resistors in order ..
If the average frequency emitted by a 200,-, rm W light bulb is 5.00 times 10^ {14}, {rm Hz}, and 10.0 percent of the input power is emitted as visible light, about how many visible-light photons are emitted per second.
I once observed a woman on an airplane at night with a camera. As we flew low over Washington DC she was impressed with the view of the city lights in the dark. She stood back in the aisle and tried to take the picture by the window using her flash. ..
A mass of 0.4 kg, hanging from a spring with a spring constant of 80 N/m, is set into an up-and-down simple harmonic motion. What is the potential energy stored in the spring
A student pushes a 60 kg couch across a carpet at a constant velocity. find the magnitude of the force of the student on the couch
A container is filled to a depth of 22.0 cm with water. On top of the water floats a 28.0-cm-thick layer of oil with specific gravity 0.500
If a cat repeatedly rubs against your cotton slacks on a dry day, the charge transfer between the cat hair and the cotton can leave you with an excess charge of -2.00 ?C. How many electrons are transferred between you and the cat
The Earth has an electric field that points toward the center of the earth and that has a magnitude of 150 N/C. How much charge is needed for it to be suspended in the air
At what angle must the projectile be fired to hit a target positoned at a range 10km away if the initial speed of the projectile is 500ms
A steel ball is dropped from a building's roof and passes a window, taking 0.13 s to fall from the top to the bottom of the window, a distance of 1.20 m. How tall is the building
A converging lens has a focal lenght of 20cm. determine Where is the image located
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