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A wooden block of mass m = 9 kg starts from rest on an inclined plane sloped at an angle θ from the horizontal. The block is originally located 5m from the bottom of the plane. If the block, undergoing constant acceleration down the ramp, slides to the bottom in t = 2 s, and θ = 30º, what is the magnitude of the kinetic frictional force on the block?
A pool ball istraveling at 2.0 m/s towards an identical pool ball, which isinitially at rest. After thecollision, the first ball moves with a speed of 1m/s at an angle of10o with respect to thepositive x - axis. Find the velocity of the second cuebal..
a wave on a string is described by the equation y0.150 m sin 1.795x 2010.6t where y is the vertical distance in
The wavelength of the laser beam used in a compact disc player is 649 nm. Estimate the spacing between the slits of the grating
Two charged bodies exert a force of 0.190 N on each other. If they are moved so that they are one-fifth as far apart, what force is exerted
a square loop with sides of length l 40.7 cm carries current i 4.49 a. find the magnitude of the magnetic field from
An object at rest on a flat, horizontal surface explodes into two fragments, one seven times as massive as the other. How far does the lighter fragment slide
The components of the electric field in an electromagnetic wave traveling in vacuum are described by Ex = 0, Ey = 0, and Ez = 7.41 sin(4.61x - wt) V/m, Calculate the frequency of the wave
q.water flows over a dam at the rate of 670 and falls vertically 78 before striking the turbine blades.estimate the
Suppose you are on Mars when it is 9x10^10 m from earth. You call earth for the correct time and receive a recorded message indicating that the time at the tone is exactly 5:00 pm
A 2.6-kg cart is rolling along a frictionless, horizontal track towards a 1.9-kg cart that is held initially at rest. What is the total momentum of the system of the two carts
The apparent weight of passengers on a roller coaster increases by 52 as the car goes through a dip with a 35 radius of curvature. What is the car's speed at the bottom of the dip
A telescope mirror has a radius of curvature of 18.0 m. What is the diameter of the image of the Moon produced by this mirror
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