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Ball of mass "m" hangs on a string of length L` straight down from a cart of mass M standing on horizontal rails. The cart can move along the rails without friction. While the cart is at rest, the ball is given a horizontal velocity v0, v0 <sqrt(2gl) directed along the rails.
What is velocity of the ball when it reaches its maximal elevation?
Students in a fraternity house want to be able to spray water 25 m across their neighbor's yard onto a patio. What size nozzle do they need
Two astronauts are, 4.86 m apart in their spaceship, speaking to each other. How far away from the Earth is the spaceship
A rotating wheel requires 2.99-s to rotate through 37.0 revolutions. What is the constant angular acceleration of the wheel
A thin block of soft wood with a mass of 0.074 kg rests on a horizontal frictionless surface. Calculate the initial and final kinetic energies of the system
a 5 mf capacitor and a 9 mf capacitor are connected in parallel to a 60 hz generator operating with an rms voltage of 120 v
A spacecraft of 140 kg mass is in a circular orbit about the Earth at a height h = 3RE. What is the spacecraft's kinetic energy
How many moles of gas are in a balloon with a volume of 5.07 liters at a temperature of 298 K and a pressure of 1.11 atm
Write down the original position of the system
What is the longest wavelength of light that may be absorbed by a hydrogen atom that starts in the second excited state
Find density of the object
A 72.4 man steps off a platform 3.02 above the ground. He keeps his legs straight as he falls, What is the magnitude of the reaction force to the force
You have designed a new musical instrument of very simple construction. Your design consists of a metal tube with length L and diameter L/10. What must be the tension of the string to produce the desired effect
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