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What is the total force on the side of a cubic pool of water whose depth is 3.20 meters? (Count water pressure only. Air pressure cancels.)
a man stands on the roof of a building of height 16.1m and throws a rock with a velocity of magnitude 26.8 m/s, Calculate the maximum height above the roof reached by the rock
What is specific gravity of this other fluid
A particular guitar string is supposed to vibrate at 200Hz, but it is measured to actually vibrate at 209Hz. By what percent should the tension in the string be changed to get frequency to the correct value.
A 0.500-kg block rests on the frictionless, icy surface of a frozen pond. what is the minimum uncertainty in the block's speed
A turntable that spins at a constant 80 rpm takes 3.70s to reach this angular speed after it is turned on. Find its angular acceleration (in rad/s^{2}), suppose it to be constant, and the number of degrees it turns through while speeding up.
1. Estimate the rate of speed (length per time) at which the hair on your head grows. Use your own experience as a guide for your answer. First express your estimate in inches per second and then in meters per second. Use scientific notation.
A point charge q1 = 15.00 microC is held fixed in space. From a horizontal distance of 8.0cm, a small sphere with mass 4.00*10^-3 kg, What is the acceleration of the sphere at the instant
A toy car X of mass .200 kg moves along a frictionless surface with a velocity of .180 m/s. It collides with another toy car Y, with the mass .250 kg and a speed of .130 in the same direction.
The speed of sound in air at room temperature is 340 m/s. What is the frequency of a sound wave in air with wavelength 1.3 m
Stellar radial velocity variations as small as 1 m/s can be detected with current technology. what is the radius of the widest circular orbit on which jupiter could currently be detected orbiting the Sun
The glow-in-the-dark dials on some watches and some keychain lights shine with energy provided by the decay of radioactive tritium, 3^1H. What is the speed of the emitted electron
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. If the coefficient of friction is unchanged, what is the new acceleration of the box
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