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The cheetah is one of the fastest accelerating animals, for it can go from rest to 32.3 m/s in 3.52 s. If its mass is 120 kg, determine the average power developed by the cheetah during the acceleration phase of its motion. Express your answer in (a) watts and (b) horsepower.
A 0.330-kg volleyball approaches a player horizontally with a speed of 16.0 m/s. What impulse is delivered to the ball by the player
A car of mass M= 900-kg travelling at 45.0 kmh enters a banked turn covered with ice. The road is banked at an angle, and there is no friction between road and car's tires.
A circular coil of wire of 200 turns and diameter 2.0 cm carries a current of 4.0 A. What is the magnetic torque on the coil
a 900.0 N hiker stops 1/3 of the way across a 3600.0 N bridge. Find the normal force acting on concrete supports at each end of the brige
Two objects with masses of 2.90 kg and 8.00 kg are connected by a light string that passes over a frictionless pulley, Determine the acceleration of each object
An electron with a speed of 3.0x10^6m/s moves into a uniform electric field of magnitude 1.0x10^3 N/C. How far does the electron travel before it is brought to rest
An electric motor with a 4.7-hp output drives a machine with an efficiency of 30%. What is the energy output of the machine
Two point charges Q1 = +5.25 nC and Q2 = ?2.15 nC are separated by 40.0 cm, What is the electric potential at a point midway between the charges
You use a concave mirror to focus the light from the sun to a small point. Is this point located at the focal point, further from the mirror than the focal point, or closer than the focal point? Explain
A swimmer heading directly across a river 200 m wide reaches the opposite bank in 6 min 40 s. She is swept downstream 480 m. What is the speed of the current
A 21.5-g bullet is fired from a rifle. It takes 2.15 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 620 m/s. find the average net force exerted on the bullet
If an electron makes a transition from the n = 4 Bohr orbit to the n = 3 orbit, determine the wavelength of the photon created in the process
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