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A block is at rest on a plank whose angle can be varied. The angle is gradually increased from 0 deg. At 27.1°, the block starts to slide down the incline, traveling 2.80 m down the incline in 1.70 s. Calculate the coefficient of static friction between the block and the plank.
Calculate the kinetic coefficent of friction between the block and the plank.
A 0.07-kg lead bullet traveling 296 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs
A space station in the form of a large wheel, 311m in diamter, rotates to provide an "artificial gravity" of 5.2m/s^2 for people located on the outer rim. Find the rotational frequency of the wheel
Three blocks are located on a horizontal frictionless table. They are connected by a massless cord, What is the acceleration of the system
There are 3 force vectors acting upon a central mass of m = 2.5 kg. What is the magnitude and direction of the acceleration
What is the direction of the electric field at point P and determine the linear charge density. Put your answer in terms of q, L, a, and physical constants.
What is tension in the cord
A ball rolls across a floor with an acceleration of 0.100 m/s2 in a direction opposite to its velocity. What was the initial speed of the ball
A spring loaded ballistic pendulum gun requires an increasing force to load. Calculate the speed of the ball as it leaves the gun
A race car can be slowed with a steady acceleration of -11 m/s2 if the car is going 55m/s how many meters would it travel before it stops.
A 70-kg bicyclist coasts down a hill that makes a 10degree angle with the horizontal at a speed of 10 m/s. how fast can he go up the hill
A 0.600 kg block is attached to a spring with spring constant 18 N/m. While the block is sitting at rest, What is the amplitude of the subsequent oscillations
Calculate the de Broglie wavelength for an alpha particle (He-e nucleus) with energy E = 4.2 GeV (which is emitted in the radioactive decay of U-238)
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