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A 1500 wrecking ball hangs from a 18 -long cable. The ball is pulled back until the cable makes an angle of 29.0 with the vertical. By how much has the gravitational potential energy of the ball changed?
The headlights of a pickup truck are 1.33 m apart. What is the greatest distance at which these headlights can be resolved
A rectangular loop is 1.2 m wide and 0.80 m tall and carries 0.50 A of current clockwise. Find the net force and torque on the rectangular loop
A terrestrial telescope uses an objective and eyepiece with focal lengths of 42cm and 6.0cm, respectively. find the magnification of the telescope for an object at infinity
A butterfly fliest from the top of a tree in the center of a garden to rest on top of a red flower at the garden's edge. The tree is 8 m taller than the flower, and the garden is 12 m wide. Determine the magnitudes of the butterfly's displacement?
A spherical source radiates sound uniformly in all directions. At a distance of 16 m, the sound intensity level is 10-4 W/m2. (a) At what distance from the source is the intensity 10-7 W/m2? (b) What power is radiated by this source?
q1. a crate with mass 35.5 initially at rest on a warehouse floor is acted on by a net horizontal force of 120. what
A lawn mower has a flat, rod-shaped steel blade that rotates about its center. If all of the rotational kinetic energy of the blade could be converted to gravitational potential energy, to what height would the blade rise
an induction roller coaster can accelerate a train from zero to 27m/s in 2.5 seconds. What is the average force exerted on a 68kg rider
Two pulse of light (red and blue) enter a huge block of glass at the same time. What is the index of refraction for the blue light in the glass
a net force described by the equation fxx25x acts on a mass of 3 kg. what is the objects speed after moving a distance
Fred Jones owns 56 shares of the Robust Corporation's stock. Robust announces a 3 for 2 stock split. Explain how many shares will Fred have after this split?
A loaded ore car has a mass of 935 kg and rolls on rails with negligible friction. What maximum power must the winch motor provide
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