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A crate is pushed along a flat surface at constant velocity by a force of 68 N. The coefficient of kinetic friction is .30. What is the mass of the crate?
What fraction of the power radiated by the sun is intercepted by the planet Mercury? The radius of Mercury is 2.44 x 106 m, and its distance from the sun at the moment is 5.75 x 1010 m. presume that sun radiates uniformly in all directions.
Consider two forces exerted on a 65kg object: one 200. N acting at 25 degrees and another of 100. N acting at 45 degrees. find the net force acting on the object
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the magnitude of the acceleration of a satellite in a geosynchronous orbit
A puck slides on a surface for 5.6 m before it stops. If it was moving at a velocity of 15 m/s and has a mass of 1.2 kg, what is the force of friction exerted on the puck
A uniform thin disk (I=1/3ML^2) of length L and mass M is pivoted at one end. It is held horizontal and released. Find the angular acceleration of the stick immeidately after it is released
A simple harmonic oscillator consists of a block of mass 4.kg attached to a spring of spring constant 153 N/m. When t = 2 s, the position and velocity of the block are x = +0.129 m and v = +3.415 m/s.
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 21 m/s at an angle of 31 degrees above the horizontal
A marble slide towards a 2nd marble at rest along the surface of frictionless table-top. What is the velocity of the 2 bodies after collision
My flashlight beam makes an angle of 60° with the surface of the water before it enters the water. what angle does the beam make with the surface
A two-slit pattern is viewed on a screen 1.17 m from the slits. What is the width of the central bright fringe, if the third dark fringes on either side are 26.4 cm apart?
Determine the magnitude of the emf induced in the loop after exactly time 6 has passed since the circumference of the loop started to reduce.
After falling from rest from a height of 28 m, a 0.46 kg ball rebounds upward, reaching a height of 18 m. If the contact between ball and ground lasted 1.7 ms, illustrate what average force was exerted on the ball?
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