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A ball with an intial velocity of 8.00 m/s rolls up a hill without slipping. Treating the ball as a spherical shell, calculate the vertical height it reaches. Repeat the calculation for the same ball if it slides up the hill without rolling.
Three equal point charges, each with charge 1.15 , are placed at the vertices of an equilateral triangle whose sides are of length 0.600 . What is an electric potential energy of the system? (Take as zero the potential energy of the three charges ..
A black furnace of surface area A = 3.0 m2 is fired up. Its outside temperature reaches 450oC. Calculate the net loss of power (in watts) by the furnace
A jeweler working awith a heated 47 g gold ring must lower the ring's temperature to make it safe to handle. If the ring is initially at 99 C, what mass of water at 25 C is needed to lower the rings temperature to 38 c.
The earth orbits the sun once a year (3.16X 107s) in a nearly circular orbit of radius 1.50X1011m. With respect to the sun, determine the tangential speed of the earth
q1. the current in a coil changes from 3.80 a to 1.90 a in the same direction in 0.510 s. if the average emf induced in
A weightlifter bench-presses a 170.0 kg barbell from his chest to a height equal the length of his arms 0.750 m. What is the potential energy of the barbell relative to the weightlifter\'s chest after he lifts the barbell
While taking photographs in Death Valley on a day when the temperature is 52.0°C, What current does he register there if the temperature is -88.0°C
A rubber raft of mass 3M floats past a dock at 1 m/s toward the east. Find the final velocity of the raft and girl
A light ray initially in water enters a transparent substance at an angle of incidence of 39.0°, Calculate the speed of light in the transparent substance
The magnetic coils of a tokamak fusion reactor are in the shape of a toroid having an inner radius of 0.700 m and an outer radius of 1.30 m. Find the magnitude of the magnetic field inside the toroid
Starting from rest a 12 Kg block slides down a frictionless curved slide (h = 8m, the vertical height) from A to B. Find the work done by friction in stopping the block
question1a parachutist relies on air resistance mainly on her parachute to reduce her downward velocity. she and her
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