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A super ball, made of rubblerlike plastic, is thrown against a hard smooth wall. The ball has a mass of 4.0g and strikes the wall from a perpendicular direction with a speed of 15.0 m/s. For simplicity, assume that the acceleration is constant while the ball is in contact with the wall. After touching the wall, the center of mass of the Super Ball moves .50 CM toward the wall and then moves the same distance away to the complete the bounce.
What is the magnitude of the impulse delivered by the wall?
What is the magnitude of the time average force?
A 50 g horizontal copper rod has a length of 1.0 m. Calculate the minimum current in the rod so that it will float in a horizontal magnetic field of 2.0 T
A resistor of 2 ? and another of 3 ? are connected in parallel, and this combination is joined in series with a 4-? resistor across a battery. what is the potential drop across the 3-? resistor
A cannon shoots a ball with an initial velocity of 152-m/s and a launch angle of 62°. The gravitational acceleration is 9.80 m/s2. Assuming no air resistance, how long would the cannonball stay in the air.
A car of mass 9.50×102kg and a truck of mass 3.00×103kg run into one another due to ice on the road. Calculate the size of the force on the car due to the truck at that time
An automobile traveling at 11.0 along a straight, level road accelerates to 72.0 in 5.10. What is the magnitude of the auto's average acceleration
Two stationary positive point charges, charge 1 of magnitude 3.55 and charge 2 of magnitude 2.00 , are separated by a distance of 30. An electron is released from rest at the point midway between the two charges, and it moves along the line connec..
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 18.0cm , giving it a charge of -12.0?C. Find the electric field just inside the paint layer
A tennis ball on Mars, where the acceleration due to gravity is 0.379 of a g and air resistance is negligible, How fast was it moving just after being hit
create destructive interference between the speakers. Friction provides the force required for a car to travel around a flat, circular race track.
Assume the freezer operates for 5 hours each day, how much power does it require while operating
An ac series circuit has an impedance of 196 ? , and the phase angle between the current and the voltage of the generator is ? = -72°. The circuit contains a resistor and either a capacitor or an inductor
A 1.5kg weight hangs from a 8.0kg, solid wheel with a 20 cm circumfrence by a thin string wrapped several times around the circumfrence. How fast (in radians/second) is the wheel turning just before the weight hits the floor
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