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A lead ball is dropped into a lake from a diving board5.50 m above the water. It hits the waterwith a certain velocity and then sinks to the bottom with this sameconstant velocity. It reaches the bottom 4.94 s after it is dropped. (Assume the positivedirection is upward.)
A) What is the average velocity of the ball?
A parallel-plate air-filled capacitor having area 51cm2and plate spacing 1.0 mm is charged to a potential differenceof 670 V. calculate the energy density between the plates
A 2.62 kg mass attached to a light string rotates on the horizontal, frictionless table. The radius of the circle is 0.4207 m, and string can support a mass of 14.70 kg before breaking.
This is because of the average release of about 0.03 J per kilogram each year. Show that at 500 C increase in temperature for a thermally insulated chunk of granite takes about 13.3 million years. (Assume that the specific heat of capacity c of g..
A 12.9-?F capacitor, a 22.1-k? resistor, a switch, and a 25.0-V battery are connected in series. What is the rate of change of the elecric field between the plates of the capacitor
The frequencies of the spectral lines in light from a distant galaxy are found to be two-thirds as great as those of the same lines in light from nearby stars. Find the recession speed of the distant galaxy
Water is moving with a speed of 5.4 m/s through a pipe with a cross-sectional area of 4.8 cm2. What is the speed at the lower level
A jet flying at 125 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, Calculate the magnitude of the necessary lifting force
A series RLC circuit has a resistance of 12 ohms and an impedance of 10 ohms, what average pewer is delieverd to circuit
A ball is launched with an initial velocity of 24.9 m/s at a 45° angle from the top of a cliff that is 9.00 m above the water below. What is the balls speed when it hits the water
for a projectile launched horizontally which of the following best describes the vertical component of a projectiles
when an aluminum object is fully submersed in a pool of oil with density 700 kgm3 and place on a scale at the bottom of
In the figure below, the hanging object has a mass of m1 = 0.480 kg; the sliding block has a mass of m2 = 0.770 kg; and the pulley is a hollow cylinder with a mass of M = 0.350 kg, an inner radius of R1 = 0.020 0 m, and an outer radius of R2 = 0.0..
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