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A 5 kilogram block is connected to a 10 kilogram block by a cord on a horizontal, frictionless surface. The 10 kilogram block is pulled horizontally by a force of 30 Newton. Find what is the tension in the cord connecting them?
a ballet director assigns slow graceful steps to larger dancers and quick movements to smaller dancers. why is this
"A horizontal force of 5.0N pushes a .50kg block against a vertical wall. the block is initially at rest. If mu s = .60 and mu k =.80 then the frictional force is?
The speaker and two microphones shown in the figure are arranged inside a sealed container filled with neon gas. What is the speed of sound in neon gas
White light, which is a mix of all visible wavelengths in the range of 400 nm to 700 nm, What is the thickness of the plate if the next wavelength for which there is constructive interference is 540.6nm
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. How many electrons are there in 4.95 liters of water
A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, Find the velocity (magnitude and direction) of the ball just before the collision
a 25 gram bullet moving at 550 ms strikes and imbeds itself in a 3.5-kg wooden block that is at rest on a level
A crate of mass 56 kg is attached to one end of a string, and the other end of the string runs over a pulley and is held by a person, what is the crate's acceleration
The Earth orbits the Sun once per year. What is the centripetal force keeping the Earth in orbit
In order for the elevator to push us down, what directin must that force be in? Is it doing any pushing at that time and how then do the normal forces line up?
As the drawing shows, two thin strips of metal are bolted together at one end and have the same temperature. One is steel, and theother is aluminum. The steel strip is 0.10% longer than thealuminum strip. By how much should the temperature of the str..
A 10 kg hammer strikes a nail at a velocity of 8.3 m/s and comes to rest in a time interval of 8.0 ms. What is the impulse given to the nail
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