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Find the force P necessary to push a 50.6 kg block down an incline of 32.4 degrees with an acceleration of 1.78 m/s^2. P is parallel to the incline and the coefficient of friction between the block and the incline surface is 0.805.
a 3 kg cylinder falls vertically from rest in a very tall, evacuated tube 20 m above the surface of the earth. what is the kinetic energy just before it hits the earth
Ther normal hydrogen atom consists of a proton nucleus and an orbital electron. What is the orbital speed of the orbiting electron
A particularly beautiful note reaching your ear from a rare Stradivarius violin has a wavelength of 39.1 cm. The room is slightly warm, so the speed of sound is 344 m/s. Part A If the string's linear density is 0.560g/m and the tension is 160N , how ..
You have a converging (convex) lens and a diverging (concave) lens and the magnitude of the focal length of each lens is 38.2 cm. Determine which lens you should use in order to produce an image of a light bulb on a screen several meters away
A29.0 kg wheel, essentially a thin hoopwith radius 1.02 m, is rotating at 280rev/min. It must be brought to a stop in 15.0 s. How much work must be done to stop it
A solid cylindrical disk has a radius of 0.15 m. It is mountedto an axle that is perperndicular to the circular end of the diskat its center. What is the mass of the disk
The pressure of an ideal gas remains at 200 Pa while 1000 joules of heat are removed and its internal energy increases by 2000 joules. What was the change in the volume of the gas
A car accelerates uniformly from rest to a speed of 40.0 mi/h in 12.0 s. Find (a) the distance the car travels during this time and (b) the constant acceleration of the car.
with what minimum speed must you toss a 150 ball straight up to just touch the 14--high roof of the gymnasium if you
On the salt flats of Bonnevile, Utah (latitude 41 degrees N) the British auto racer John Cobb in 1947 became the first man to travel at a speed of 400 mph on land. If he was headed due north at this speed, find the ratio of the magnitude of the Co..
A metal ball with diameter of a half a centimeter and hanging from an insulating thread is charged up with 1020 excess electrons. An initially uncharged identical metal ball hanging from an insulating thread is brought in contact with the first ball,..
A basketball player with a body weight of 850 N exerts a force of -4500 N against the ground during takeoff (jumping upward). How much force does the ground exert on the basketball
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