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A bullet with a mass of 4.0 g and a speed of 650 m/s is fired at a block of wood by a mass of 0.095kg. The block rests on a frictionless surface and is thin enough so that the bullet passes completely during it. Instantly after the bullet exits the block, the speed of the block is 23 m/s.
A) What is the speed of the bullet when it exits the block?
B) What are the initial and final kinetic energies for this system? Describe.
George just graduated from college and is going on his first job interview. He has learned that there are two other candidates. Because of the information he has learned about the serial position effect, George asks to be either the first or the last..
an object carries a charge of -8.9 microc while another carries a charge of -2.0 microc. how many electrons must be
An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50s. what is the average speed of the object
Electronic flash units for cameras contain a capacitor for storing the energy used to produce a flash. In one such unit the flash lasts for 0.00129 s with an average light power output of 1,657 W.
An observer sees two spaceships moving in opposite directions, Find the speed of one spaceship relative to the other
Two people carry a heavy electric motor by placing it on a light board 2.70m long. One person lifts at one end with a force of 380N, Where is its center of gravity located
Two metal spheres, each of mass 20 g and initially at rest, are dropped from a height of 9 m in an evacuated chamber. Find the difference in final speeds of the two spheres
A penny of mass 3.10 g rests on a small 20.0-g block supported by a spinning disk
An RLC circuit includes a 10 resistor,1.5 µF capacitor, and 50 mH inductor. The capacitor is ratedat 1200 V. The circuit is driven by an AC source whose peak voltageis 100 V.
Gas is contained in a 8.00 L vessel at a temperature of 21.0°C and a pressure of 5.00 atm. Determine the number of moles of gas in the vessel. How many molecules are there in the vessel?
A coil formed by wrapping 45 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil, What is the total length of the wire
A parallel plate capacitor has a potential difference between the plates of 80 V. If the charge on one of the plates of the capacitor is +8.0 ?C, what is the electrical energy stored by this capacitor
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