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You decide to drop a melon from rest from the first observation platform of the Eiffel Tower. The initial height h from which the melon is released is 58.3 m above the head of your French friend Pierre, who is standing on the ground right below you. At the same instant you release the melon, Pierre shoots an arrow straight up by an initial velocity of 251.m/s. (a) At what height above Pierre’s head do the melon and the arrow collide? (b) What are the velocities of the melon and the arrow at the moment of collision?
Grace is playing with her dolls and decides to give them a ride on a merry-go-round. If the doll is 13 cm from the center of the spinning turntable platform, how fast (in m/s) is the doll moving
A simple pendulum with a period T = 2.00 s is attached to the ceiling of an elevator which is initially at rest, Calculate the period of oscillations when the elevator accelerates downwards
When a ceiling fan rotating with an angular speed of 1.70 rad/s is turned off, a frictional torque of 0.263 N·m slows it to a stop in 5.15 s. What is the moment of inertia of the fan?
White light (400 - 700 ) is incident on a 610 diffraction grating. What is the width of the first-order rainbow on a screen 2.3 behind the grating
A 1000 kg artillery shell is fired from a battleship. What net external force is exerted on the artillery shell before it leaves the barrel of the gun
A certain person in a typical conversation speaks at a soundlevel of 63 dB. The music at a certain rock concert reaches a soundlevel of 110 dB. How many times as great is the intensity of the music?
a 45.0-kg crate is dragged at constant velocity 8.20-m across a horizontal floor with a rope making a 30 degree angle
A vertical spring with a spring constant of 440 N/m is mounted on the floor. what height (in cm) above the compressed spring was the block dropped
Illustrate when is velocity of the boulder zero? Illustrate what is the magnitude of the acceleration while the boulder is moving? What is the direction of the acceleration while the boulder is moving?
A uniform bar of metal, 0.40 m long, with a diameter of 2.0 cm, has a mass of 1.1 kg. Find the wavelength of the longitudinal wave in the metal, in mm
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. how many antinodes are in the standing wave
An 81.2-mH inductor and a6.22-µF capacitor are connected inseries with a generator whose frequency is 373 Hz. The rms voltage across the capacitor is2.38 V. Determine the rms voltage acrossthe inductor.
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