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A race car driver must average 199.0 km/h over the course of a time trial lasting ten laps. If the first nine laps were done at 195.0 km/h, what average speed must be maintained for the last lap? (Answer to the nearest?
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 60.0 degrees above the horizontal. The rocket is fired toward the ground 11.0-m high wall, which is located 27.0 m away. By how much does the rocket clear the top of the wa..
A wind is blowing straight from north to south at an unknown speed. When you hold up a piece of thread you can see that the wind stretches it out so that it points from your hand to the south. What is the speed of the wind relative to the ground
A small object is placed to the left of a convex lens and on the optical axis. What is the position of the image formed by the lens
A series of RLC circuit has R=200 ohms, L=40.0mH and C=120pF. What is the impedance of this circuit at resonance
You are traveling in a car toward a hill at a speed of 36.4 mph. The car's horn emits sound waves of frequency 231 Hz, Determine the frequency with which the waves strike the hill
q1. a car takes 9 s to go from v 0 to v 55 ms at about constant acceleration. if you wish to find out the distance
A certain alarm clock ticks four times each second, with each tick representing half a period. What is the torsion constant of the hairspring
A solid disk rotates in the horizontal plane at an angular velocity of 0.049 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
The coefficient of kinetic friction is 0.350. Illustrate what should be the magnitude of vector P , so that the net work done by it and the kinetic frictional force is zero?
The speed of a certain electron is 350 km/sec. If the uncertainty in its momentum is 0.010%, what uncertainty in its location must be tolerated
a mass m is attached to a string of length l and released when the string is horizontal, causing the mass to fall in a circular path. determine the maximum value of the tension force in the string
The bullet strikes a block of wood and penetrates to a depth of 15 cm. What resistive force (assumed to be constant) does the wood exert on the bullet? Explain how long does it take the bullet to come to rest?
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