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A 25.0-kg crate is initially at rest at the top of a ramp that is inclined at an angle θ = 30? above the horizontal. You release the crate and it slides 1.25 m down the ramp before it hits a spring attached to the bottom of the ramp. The coeffcient of kinetic friction between the crate and the ramp is 0.400 and the constant of the spring is k = 5000 N/m. How far does the crate compress the spring?
A village maintains a large tank with an open top, containing water for emergencies. The water can drain from the tank through a hose of diameter 6.65 cm. The hose ends with a nozzle of diameter 2.50 cm. A rubber stopper is inserted into the nozzl..
An object is in front of a converging lens (f = 0.370 m). The magnification of the lens is m = 3.60. Through what distance should the object be moved
A thin lens made with crown glass ( n=1.55) has a focal length of 10.0 cm. An identical lens with flint glass (n=1.65) was made. What would be the focal lens of flint glass lens?
A horizontal force of 109 Newton pushes an 8 kilogram block up a frictionless incline that creates an angle of 23 degree with the horizontal. Find the normal force that the incline exerts on block
Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.104 kg, initially moves to the right at a speed of 5.20 m/s, Find the final velocities of the blocks
An ion accelerated through a potential difference of 240.0 V has its potential energy decreased by potential energy of 7.68*10^-17 J
A light bulb emits light uniformly in all directions. The average emitted power is 150.0 W. At a distance of 5 m from the bulb, decide (a) the peak value of the electric field (b) the rms value of the electric field and (c) the average intensity of t..
An airplane starting from airport A flies 304 km east, then 364 km at 35.5° west of north, and then 150 km north to arrive at last at airport B.
An 81 kg baseball player slifes into second base. The coefficient of kinetic friction between the player and the ground is 0.49. A) what id the magnitudr of the frictional force? B) if thevplayrr comes to rest after 1.6s what was his initial veloc..
a pitcher delivers a fast ball with a velocity of 43 m/s to the south. the batter hits the ball and gives it a velocity of 51 m/s to the north. what was the average acceleration of the ball
A charged particle leaves the origin with a speed of 3.00 x 10^6 m/s at an angle of 35 degrees about the x axis. A uniform electric field, given by E = -Eo exists throughout the region (the uniform field points in the positive y direction).
A 0.3 kg ball traveling at 5 m/s strikes a wall and rebounds elastically, the collision took 0.02 seconds. What is the Impulse? What is the force on the wall
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