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A crate that weighs 20 Newton starts from rest and slides down a rough 5.0 meter long ramp, inclined at 25o with the horizontal. During this slide 20 Joule of energy is lost due to friction.
Obtain the kinetic friction force on the crate?
Obtain the speed of the crate at the bottom of the ramp?
The acceleration of gravity on the surface of Mars is known to beabout 1/3 the acceleration of gravity on the Earth. find the mass ofMars in terms of the mass of the Earth
two tiny conducting spheres are identical and carry charges of -18.7c and 47.5c. they are separated by a distance of
Unpolarized light of intensity I0 is incident on three polarizing filters. What light intensity emerges from the third filter
An airplane travels a distance 270 m down the runway before taking off. If it starts from rest, moves with a constant acceleration, what is its speed when it takes off
A 1.5 solid sphere (radius = 0.20 ) is released from rest at the top of a ramp and allowed to roll without slipping. The ramp is 0.50 high and 5.7 long. what is its rotational kinetic energy
The fiberglass mantle assembly line at Ace Production is capable of producing products an hour. Today, the firm operated the assembly line for a total of hours.
A thin film of oil is placed on a piece of glass. The oil has an index of refraction of 1.29 and the glass has an index of refraction of 1.56. how thick is the film
The drawing shows four point charges. The valueof q is 3.0 μC, and thedistance d is 0.63 m. Find the total potentialat the location P. Assume that the potential of apoint charge is zero at infinity.
Two blocks are connected with a rope that passes of a set of pulleys. One block weighs 412 Newton’s, and the other weighs 908 Newton’s. The rope and the pulleys have no mass or friction. (a) What is the acceleration of the lighter block?
A compact disk player has just been turned off. A disk decelerates uniformly from an initial angular velocity of 8.30 rev/s. What is the tangential acceleration of a point on the disk 3.60 cm from the axis
The drawing shows two boxes resting on frictionless ramps. One boxis relatively light and sits on a steep ramp. The other box isheavier and rests on a ramp that is less steep. The boxes arereleased from rest at A and allowed to slide down the ramp..
On Mars, where air resistance is negligible, an astronaut drops a rock from a cliff and notes that the rock falls about d meters during the first t seconds of its fall. Assuming the rock does not hit the ground first, how far will it fall during t..
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