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Question: A box sits on a horizontal wooden board. The coefficient of static friction between the box and the board is 0.5. You grab one end of the board and lift it up, keeping the other end of the board on the ground. What is the angle between the board and the horizontal direction when the box begins to slide down the board?
A “U” shaped tube (with a constant radius) is filled with water and oil as shown. The water is a height h1 = 0.37 m above the bottom of the tube on the left side of the tube and a height h2 = 0.12 m above the bottom of the tube on the right side o..
A cube of ice is taken from the freezer at -8oC and placed in a 110 g aluminum calorimeter filled with 300 g of water at a temperature of 22oC. What was the mass of the ice cube
A very long solid cylinder with radius R has positive chargeuniformly distributed throughout it, with charge per unit volume ? What is the electric field at a point outside the volume in terms of the chargeper unit length ? in the cylinder?
A spring with k = 53 N/m hangs vertically next toa ruler. The end of the spring is next to the 15 cm mark on theruler, where will the end of the spring line up with the ruler marks
if the block is raised back to 100 meters without gaining or losing heat from the environment, What is the blocks temp after it was raised
A 15g bullut is stopped in a block of wood ( mw=5.8 kg). What was the origional speed of the bullet
Discuss briefly centripetal acceleration, the speed and the force exerted by a ball attached to a string.
a 550-kg car traveling at 24.0 m/s collides head on on with a 680-kg pick up truck. what is the momentum of the car before collision
The speed of sound in air is 345 m/s. A tuning fork vibrates above the open end of a sound resonance tube. what is the frequency (in Hertz) of the tuning fork
A bullet of m=3.80g moving at 514m/s impacts a large fixedblock of wood and traveles .0610m before comming to rest. find the force exerted by the wood on the bullet
A shot-putter throws the shot ( mass = 7.3 ) with an initial speed of 14.0 at a 32.0 angle to the horizontal. Calculate the horizontal distance traveled by the shot
If an astronomical telescope has the magnification of -32.0 ? and its objective lens has a focal length of 77 cm, what is the focal length of its eyepiece
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