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A spring gun projects a golf ball at an angle of 45 degreesabove the horizontal. The ball has a horizontal range of 32feet.
(A) What is the maximum height to which the ball rises?
(B) For the same initial velocity, what are the two angles forwhich the range is 20 feet.
What is the efficiency of a cyclical heat engine in which 65.0 kJ of heat transfer occurs to the environment for every 95.0 kJ of heat transfer into the engine
At a rock concert, a dB meter registered 130 dB when placed at a2.8 m in front of a loudspeaker on the stage. (a) what was thepower output of the speaker assuming uniform spherical ofthe sound and neglecting absorption in the air?(b) how far awaywoul..
The focal length of a bi-convex lens is 10 cm. The focal length of a convex-concave thin lens is -20 cm. If placing them in parallel and in close contact, what is the compound focal length
What is the critical angle for light to stay inside a thin glass rod (n = 1.72) surrounded by air
On a frictionless, horizontal air track, the glider oscillates at the end of an ideal spring of force constant 2.52N/cm. The graph in the acceleration of the glider as a function of time. Find the mass of the glider.
if a plywood box designed to store an unmanned air vehicle has length-width-height dimensions of 3.0 x 2.0 x 1.0 ft and
A young woman on a skateboard is pulled by a rope attached to a bicycle. The velocity of the skateboarder is v = (4.6m/s )x, find the work the rope does on the bicycle
A helicopter is ascending vertically with the speed of 5.79. At a height of 127 above the Earth, a package is dropped from a window. How long take the package to hit the ground.
air that initially occupies 0.49 m3 at a gauge pressure of 63 kpa is expanded isothermally to a pressure of 101.3 kpa
consider a point charge q 5.0?c point a at distance d1 1.050 m from q and point b at distance d2 0.500 m. if these
Draw a plot of ct vs x showing the positions of the three spaceships and of the light pulses vs. time, in Earth's frame. Find the times, according to the Earth frame, at which the pulses from ships C and A reach ship B.
A 145 g copper bowl contains 205 g of water, both at 20°C. A very hot 300 g copper cylinder is dropped into the water, causing the water to boil, with 5.40 g being converted to steam.
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