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A 7.80 gram bullet moving at 460 m/s penetrates a tree trunk to a depth of 4.4 centimeter.
(a) Use work and energy considerations to determine the average frictional force that stops the bullet.
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(b) Suppose the friction force is constant, find how much time elapses between the moment the bullet enters the tree and the moment it stops moving.
two point charges are separated by 10.0 cm and have charges of 2.00 muc and -2.00 muc respectively. calculate the
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Given an RLC circuit where its resistance, capacitance and inductive reactance are all the same, 10 ohms. Is this circuit inductive, capacitive or in resonance? Secondly, if the frequency is doubled, what is the new impedance?
In a popular amusement park ride, a rotating cylinder of radius R = 3.10 m is set in rotation at an angular speed of 4.20 rad/s, as in the figure shown below. The floor then drops away, leaving the riders suspended against the wall in a vertical posi..
a student builds and calibrates an accelerometer, which she uses to determine the speed of her car around a certain unbanked highway curve. what is the radius of the curve
A coin is located 20.0 cm to the leftof a converging lens (f = 16.0 cm). A second, identicallens is placed to the right of the first lens, Find the separation between the lenses
You are researching personal watercraft (PWC) safety. These vehicles have a well known safety issue in which the rider loses stearing control when there is no thrust from the engine.
a carnot engine operates with an efficiency of 23.0 when the temperature of its cold reservoir is 274 k. assuming that
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