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What is the net work done on the block while it is moving from point a to point b? Explain how you arrived at your answer. The block is moving at a constant velocity with a constant force in the presence of sliding friction.
a 2.0kg ball traveling at 2.0m/s collides head on with a 1kg ball intially at rest. Fraction of initial kinetic energy lost during the collision
You are lowering two boxes, one on top of the other, down the ramp by pulling on a rope parallel to the surface of the ramp. find the magnitude of the friction force on the upper box
A 1.40 kg iron horseshoe is taken from a forge at 950°C and dropped into 4.00 kg of water at 14.0°C. Assuming that no energy is lost by heat to the surroundings, determine the total entropy change of the horseshoe-plus-water system.
A plano convex lens is placed convex side down on a plane glass plate and illuminated from the above with red loght of wavelength of 625nm. what are the curvature and focal length of the convex surface of the lens
An RLC circuit with R = 29.7\Omega , L = 347mH , and C = 48.8\mu F is connected to an ac generator with an rms voltage of 28V . Determine the average power delivered to this circuit
A 5 kg box block is pushed 3 m up a vertical wall with constant speed by a constant force of magnitude F at an angle of 60 degrees with the horizontal.
A wheel with a mass of 40 kg, and a rim radius of 30.0 cm is mounted vertically on a horizontal axis. Find the angular acceleration of the wheel and the linear acceleration of the block
A 36 g ball is fired horizontally with initial speed v_0 toward a 110 g ball that is hanging motionless from a 1.1 m-long string. The balls undergo a head-on, perfectly elastic collision, after which 110 g ball swings out to a maximum angle theta_..
A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +25.0 rad/s. Then, the brakes are applied. In coming to rest, What is the angular acceleration of each wheel
An object placed 14.9 cm from a concave mirror produces a real image 12.3 cm from the mirror. where is the new image located as measured from the mirror
A centrifuge accelerates uniformly from rest to 15,000 rpm in 220 s. Through how many revolutions did it turn in this time
how does friction applied to the hot wheels track, Why would 20 degrees have a higher range (delta x) than 15-20 degrees
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