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A car backs out of a driveway in front of a fire truck. The driver of the fire truck takes 0.18s to hit the brakes. The fire truck travels 20.2m after the brakes are applied and hits the car with a speed 1.7 m/s 3.0s later. How far away from the car was the fire truck when the driver first saw the car?
You're 6.0 m from one wall of a house. You want to toss a ball to your friend who is 6.0 m from the opposite wall. What minimum speed will allow the ball to clear the roof
A 1.91-kg solid sphere (radius = 0.130 m) is released from rest at the top of a ramp and allowed to roll without slipping. What is the translational and kinetic energy
It takes 23 hours 56 minutes and 4 seconds for the earth to make one revolution (mean sidereal day). What is the angular speed of the earth
An aluminum ring has an inside diameter of 1.793 cm, and an iron rod has a diameter of 1.798 cm, at what common temperature will the ring just slip onto the rod
A 2.0{\rm mm} -diameter ball bearing has 3.0×109 excess electrons. What is the ball bearing's potential
Due to its spin, the electron possesses a magnetic moment ?B. Treating the conduction electrons in a metal as a free electron gas, Evaluate this expression at zero temperature
Suppose the highway is icy and the coefficient of friction between the tires and pavement is only one-third what you found in part A. What should be maximum speed of the car so it can round the curve safely?
Water is moving with a speed of 4.7 m/s through a pipe with a cross-sectional area of 4.3 cm2. The water gradually descends 7 m as the pipe increases in area to 8.2 cm2.
An electron is accelerated by a uniform electric field (1000 V/m) pointing vertically upward. Utilize newton's laws to determine the electron's velocity after it moves .10 cm.
A proton is initially at rest at a point where the potential is 455V. Sometime later the proton is at a point where the potential is 191V. If no force but the electrostatic force acts on the proton, what is its final kinetic energy.
A drag racer starts her car from rest and accelerates at 10 m/s for the entire distance of 400m. What is the speed of the race car at the end of the run
q1. a tiger leaps horizontally from a 5.9 m high rock with the speed of 3.4 ms. how far from the base of the rock wills
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