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While leaning out a window that is 5.5 m above the ground, you drop a 0.60-kg basketball to a friend at ground level. Your friend catches the ball at a height of 1.0 m above the ground. Determine the following.
(a) the amount of work done by the force of gravity
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(b) the gravitational potential energy of the ball, relative to the ground when it is released
(c) the gravitational potential energy of the ball, relative to the ground when it is caught
(d) the ratio of the change (PEf ? PE0) in the ball's gravitational potential energy to the work done on the ball by the force of gravity?
A 56.0 resistor is connected in parallel with a 117.0 resistor. This parallel group is connected in series with the 27.0 resistor. The total combination is connected across a 15.0 V battery. What is the current of the 117 resistor? What is the power ..
a soil below the water table has a density of 120 lb/ft^3 and a void ratio of .82. determine the specific gravity of solids
A passenger car traveling due east at 53.6 m/s passes a truck traveling due east at 13.4 m/s. What is the frequency heard by the driver of the car
A solid disk rotates in the horizontal plane at an angular velocity of 0.036 rad/s with respect to an axis perpendicular to the disk at its center, what is the angular velocity of the disk
The bonds are dated April 1, 2000, and are issued on that date. The discount rate of interest for such bonds on April 1, 2010, is 10%. Illustrate what cash proceeds did Harding Company receive from issuance of the bonds?
Three resistors having resistances of 1.50{\rm \Omega} , 2.30{\rm \Omega}, and 4.70{\rm \Omega} are connected in parallel to a 29.0{\rm V}battery that has negligible internal resistance
Initially stationary (the train starts at rest), a train has a constant acceleration of 0.6 m/s2, What is its speed after 21 s
When a wavelength is 300nm, its stopping potential is 1.10V. When it is changed to 200nm, the stopping potential is 3.06V. What value does this experiment yield for Planck's constant
A Heliun-Neon laser illuminates a narrow, single slit that is 1850 nm wide. Determine the wavelength of the light from the laser
A box slides down a 25° ramp with an acceleration of 1.070m/s2. Resolve the coefficient of kinetic friction between box and ramp.
The nuclear reaction that powers the sun is the fusion of four protons into a helium nucleus. How much energy is released in each fusion
A lens in Lick Observatory's 36-inch refracting telescope has a thickness of 1.96 inches at its center and an index of refraction n=1.52. What is the light speed in the lens
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