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A 35 kg block of ice slides down a frictionless incline 1.6 m along the diagonal and 0.63 m high. A worker pushes up against the ice, parallel to the incline, so that the block slides down at constant speed.
(a) Find the magnitude of the worker's force. How much work is done on the block by
(b) the worker's force,
(c) the gravitational force on the block,
(d) the normal force on the block from the surface of the incline, and
(e) the net force on the block?
find the work done to move the particle from x = 0 to x = 10.0 m by graphically determining the area under the F versus x graph. (Do this on paper. Your instructor may ask you to turn in this graph.)
A crate with a mass of 171.5 kg is suspended from the end of a uniform boom with a mass of 80.3 kg. The upper end of the boom is supported by a cable attached to the wall and the lower end by a pivot (marked X) on the same wall. compute the tensio..
An electron is accelerated by a constant electric field of magnitude 325 N/C. (a) Find the acceleration of the electron. m/s2 (b) Use the equations of motion with constant acceleration to find the electron's speed after 9.00 10-9 s, assuming it st..
Pete slides a crate up a ramp with constant speed at an angle of 27 degrees by exerting a 133 N force parallel to the ramp. How much work has been completed against gravity when the crate is raised a vertical distance of 1.6 m? The coefficient of fri..
calculate the total mechanical energy of the glider at any point in its motion. Calculate the maximum speed of glider.
What are the components of the ships displacement
A hot ( ) lump of metal has a mass of 250g and a specific heat of 0.25 . John drops the metal into a 500g calorimeter containing 75g of water at . The calorimeter is constructed of a material that has a specific heat of 0.10 . When equilibrium is ..
An explorer in dense jungles of equatorial Africa leaves his hut. He takes 41 steps at an angle 45 north of east, then 81 steps at an angle 60 north of west, then 51 steps due south. Suppose his steps all have equal length. Save him from becoming ..
A ball dropped from a height of 4.00 m makes an elastic collision with the ground. Assuming no mechanical energy is lost due to air resistance, a) show that the ensuing motion is periodic, b) find the period of the motion.
A charged particle moves in a uniform magnetic field of 0.579 T with a period of 3.15 × 10-6 s. Find its charge-to-mass ratio
The aorta is a major artery, rising upward from the left ventricle of the heart and curving down to carry blood to the abdomen, what is the magnitude (in m/s2) of the blood's centripetal acceleration
what rate must air be moving through the open window in order to keep the system in equilibrium.
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