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A golf ball of mass 0.045 kg is hit off the tee at a speed of45 m/s. The golf club was in contact with the ball for 5.0 x10-3 s. Find
(a) the impulse imparted to the golf ball,and
(b) the average force exerted on the ball by the golfclub.
The sound level measured 5.2 m away from a jet engine is 140 dB. What is the intensity of the sound at 5.2 m? What is the power transmitted by the sound waves? At what distance is the sound level exactly half?
A stunt car driver negotiates the frictionless track shown in such a way that the car is barely on the track at the top of the loop. The radius of the track is 9.9 m and the mass of the car is 1800 kg. Find the force of the car on the track when the ..
A rocket blasts off and moves straight upward from the launch pad with a constant acceleration. After 3.0 seconds the rocket is at a height of 77 m. what is its the speed at this time
q. two perpendicular long straight wires both of which lie in the plane of the paper. the current in each of the wires
The George Washington bridge, that spans the Hudson River between New York and Jersey, is 4670 feet long and is made out of steel, How much does it expand in length between winter and summer.
What is the change in gravitational potential energy of a 2.00- kg mass that is carried from the surface of the earth to a distance of one earth radius above the surface
A battery has an emf of 15.0 V. The terminal voltage of the battery is 10.2 V when it is delivering 24.0 W of power to an external load resistor R. What is the internal resistance of the battery
The sun transfers energy to the earth by radiation at a rate of approximately 1.00kW per square meter of surface. what would be the length of its sides in kilometers and in miles
Calculate the time it will take this block when released from rest to travel a distance of 0.3 m along the ramp
An iron-core solenoid is 43cm long and 1.7cm in diameter, and has 720 turns of wire. What is the permeability %u03BC at this high field strength
Suppose the gasoline in a car engine burns at 637 oC, while the exhaust temperature (the temperature of the cold reservoir) is 106 oC, Determine the ratio of the total work produced by both engines to that produced by the first engine alone
Johnny Thunder is swinging a watch from a 20.0 cm chain. What is the period of swing from the watch
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