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A tennis ball (m = 0.2 kilogram) is thrown at a brick wall. It is traveling horizontally at 15 meter per second just before hitting the wall and rebounds from the wall at 12 meter per second, still traveling horizontally. The ball is in contact with the wall for 0.02 second. Obtain the magnitude of the average force of wall on ball?
An energetic father stands at the summit of a conical hill as he spins his 22 child around on a 5.3 cart with a 2.2m-long rope. The sides of the hill are inclined at 25 degrees. He keeps the rope parallel to the ground, and friction is negligible.
An electron and a positron have masses of 9.11 10-31 kg. They collide and both vanish, with only electromagnetic radiation appearing after the collision. determine the energy of the electromagnetic radiation
A rod of length 0.850 m is attached to a pivot at one end. A force F of 2.30 N is applied to the end of the bar opposite the pivot. The force makes an angle of 65.0o with the bar. (The ? in the figure is the angle for the "line of action" of the f..
An ocean liner leaves New York City and travels 13° north of east for 268 km. How far east and how far north has it gone? In other words, what are magnitudes of the components of the ship's displacement vector in the following directions.
A box starts out at the top of a frictionless ramp, then slides down. The ramp has a height h = 2 meters, What is the kinetic energy of the box at the bottom of the ramp
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 15.0 m/s due north relative to the water. Illustrate what is the velocity of the boat relative to shore?
A hoop rolls without slipping down a ramp that is inclined at 35 degrees above the horizontal. Calculate the length of the ramp
Astronomers discover a binary star system that has a period of 96.0days. How far apart are the two stars in m
the flash unit in a camera uses a 2 battery to charge a capacitor. the capacitor is then discharged through a
A solenoid with 1200 turns per meter has a diameter of 5.00 cm. A current I = 2.44 A flows in the clockwise direction (when viewed from location P) in the solenoid. Find the magnitude of the magnetic flux through the loop
three successive resonance frequencies in an organ pipe are 1310 1834 and 2358 hz. a is the pipe closed at one end or
If the string is 9.5 m long, has a mass of 45 g and is pulled taut with the tension of 8.0 N, how much time does it take for a wave to travel from one end of the string to the other.
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