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The gravitational acceleration at the surface of a planet is 18.5 m/s2. Find the acceleration at a height above the surface equal to half the radius of the planet.
A 80.0cm3 box contains helium at a pressure of 2.30atm and a temperature of 90.0?C. What is the final pressure in each box
Oily n =1.38 finger.prints on a glass plate n = 1.52 preferentially reflect light with a frequency of 550 mm. What is the thickness of the finger print
Two magnetic air pucks are approaching each other for a glancing blow. This time one of the pucks will have an additional mass (lead collar). estimate the mass of the collar if the mass of the puck itself is 0.199 kg and the mass of the second puck..
The bullet becomes lodged in the block, and the two slide together on the floor for a distance of 1.3 m before coming to rest. If the coefficient of friction between the block and the floor is 0.40, Elucidate what is the mass of the block?
A wave has the following properties: amplitude = 0.208 m, period = 0.687 s, wave speed = 13.7 m/s. The wave is traveling in the -x direction
q1. the sound level measured in a room by a person watching a movie in a home theatre system varies from 66 db during a
A laser with a power output of 2.10 mW at a wavelength of 425 nm is projected onto calcium metal. Given the binding energy is 2.28 eV, how many electrons per second are ejected
Two charges are fixed on the x axis: one with a charge of = 5.00 at = -1.00 and the other with a charge of = 3.00 at = 1.50 . Find the force exerted on a charge = -5.00 placed at the origin (x=0). What are the magnitudes of the three charges q, q1..
In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 3.0 m/s, what minimum initial speed did the player need to give the puck in order for it to reach the teammate
q1. a sling-thrower puts a stone 0.250 kg in the slings pouch 0.010 kg and then begins to make the stone and pouch move
You drape a string over a pulley and hang a mass of 35kg from one end. You tie the other end to a point a distance L from the pulley so that the string is horizontal between this point and the pulley.
A train is moving parallel and adjacent to a highway with a constant speed of 33 m/s. What is the speed of the car just as it passes the train
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