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A ball of mass 180 g is released from rest at a height of1.50 m above the floor and it rebounds straight up to a heightof 0.700 m.
A. Determine the magnitude of the the ball's change inmomentum due to its contact with the floor.
B. If the contact time with the floor was0.0850 s, what was the average force the floor exerted on the ball?
Small spheres of diameter 0.92 mm fall through 20°C water with a terminal speed of 0.90 cm/s. Calculate the density of the spheres
A 2.0 ? resistor is connected across a 6.0 V power supply. An ammeter with internal resistance of 1.0 ? is used to measure the current in this circuit. What is the ammeter reading
there is an electric field 519nc in the positive y direction and a magnetic field of 0.319 mt directed out of the
q1. two blocks of the same mass m joined by a spring of negligible mass and with spring constant k are being lowered at
Parallel conducting tracks, separated by 2.79 cm, run north and south. There is a uniform magnetic field of 1.27 T pointing upward (out of the page). What is the direction of the magnetic force on the rod
If the frequency of oscillation of the wave emitted by an FM radio station is 95.8 MHz, determine the wave's period of vibration
Consider the four masses. Find the total gravitational potential energy of this system. How does your answer to part A change if all the masses in the system are doubled.
Two stones are thrown vertically upward from the ground, one with three times the initial speed of the other. how high (in terms of H) will the faster stone go
A kg steel ball strikes a wall with a speed of m/s at an angle of with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for s, what is the average force exerted on the ball by the wall.
As a car approaching you driver lays on the horn. The horn has an actual frequency of 350Hz but you hear the horn as 390 Hz. What is the speed of the car.
A uniform horizontal beam 5.00 m long and weighing 320 N is attached to a wall by a pin connection tht allows the beam to rotate. How far out on the beam can the person stand without breaking the cable
Suppose the skin temperature of a naked person is 34 °C while the person is standing inside a room whose temperature is 25 °C. The skin area of the individual is 2 m2.
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