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Question1
If a race car completes a mi oval track in s, what is its average speed? Did the car accelerate? I know what an average speed is, but I require to know if the car accelerated and another question which I don't get at all.
A body moving with uniform acceleration has a velocity of cm/s when its x coordinate is 3.66 cm. If its x coordinate s later is cm, what is x-component of its acceleration?
Question2
A baseball pitcher throws a fastball at a speed of 40 m/s. The acceleration occurs as the pitcher holds the ball in his hand and moves it throughout an almost straight-line distance of 2.9 m. compute the acceleration, assuming that it is constant and uniform.
Question3
A parallel-plate capacitor is charged to an electric potential of 337 V by moving 3.62E+16 electrons from one plate to the other. How much work is completed in charging the capacitor?
2.0 kg ball moving with a speed of 3.0 m/s hits, elastically, an identical stationary ball as shown. If the first ball moves away with angle 30° to the original path,
Consider a capacitor created when two identical conducting plates are placed parallel and close to each in other in vacuum, what is the magnitude of the electrostatic force between the charged plates, Is the force attractive or repulsive
A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is originally at rest, then moves at a speed of 0.20 m/s all along the conveyor belt. What is the instantaneous power produced by this machine..
As part of a carnival game, a 0.578-kg ball is thrown at a stack of 17.8-cm tall, 0.383-kg objects and hits with a perfectly horizontal velocity of 12.8 m/s. what is the moment of inertia of the object about its center of mass
What is the coefficient of kinetic friction between the crate and the floor. what height will the stream of water strike.
Calculate the work done on a gas, the change in internal energy of the gas, the heat added to the gas, and the change in entropy of the gas when 1.12 moles of oxygen
question1a child in danger of drowning in a river is being downstream by a current that has a speed of 2.25 kmh. the
A 25 cm Diameter coil consists of 50 turns of circular copper wire 2.5 mm in diameter. Determine the rate at which tyhermal energy is produced
once upon a time, a stunt man would jump across the grand canyon a motorcycle. What minimum initial speed would be required to make across the canyon
Mercury flows through a horizontal pipe 1.05 cm in diameter and 1.3 m long. determine the rate of flow through the tube
The bright core of a certain Seyfert galazy had a luminosity of 10^10 L. The luminosity increased by 100% in a period of 18 months. How does this compre to the diameter of the Milky Way
A skateboarder shoots off a ramp with a velocity of 5.7 m/s, directed at an angle of 53° above the horizontal. how far is this point horizontally from the end of the ramp
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