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A solid disk of radius R and mass 2.72 kg is spinning at angular velocity 63.9 rpm about a vertical axis. A solid disk of radius 2R drops concentrically on the first (sort of like dropping an old-fashioned 33 rpm record on a 45 rpm one), so that eventually the two cease to slip relative to each other and end up spinning at 16.8 rpm. What is the mass of the second disk?
A car of mass 1286.6 kg is moving at a speed of 67.6 mph when it misses a curve in the road and hits a bridge piling, how much average power (in watts) is expended in this interval
Illustrate what is its average acceleration during a stop from that velocity? Express your answer in m/s2. Consider the car's initial velocity to be a positive quantity.
The radius of our galaxy is 3 *10^20m, How much time would elapse on earth during the traversal
A 47-g golf ball is driven from the tee with an initial speed of 52.0 m/s and rises to a height of 24.2 m.
A 1.2 kg mass attached to a spring oscillates with amplitude of 6.3 cm and a frequency of 1.1 Hz. What is its energy of motion.
Calculate the efficiency of a fossil-fuel power plant that consumes 450 metric tons of coal each hour to produce useful work at the rate of 900 MW
A feather is dropped on the moon from a height of 1.40 meters. find the time for the feather to fall to the surface of the moon
White light is incident on a soap film (n = 1.29) in air. compute the minimum thickness of the soap film
A luge and its rider, with a total mass of 104 kg, emerges from a downhill track onto a horizontal straight track with the initial speed of 53 m/s. suppose they stop with the constant deceleration of 2.30 m/s2.
A garden plot must have a central planting area of length 13 m and width 8 m. There is to be a sidewalk around its edge of width w. If the total area, planting area plus sidewalk area, is 150 m^2, what is the sidewalk width w in meters.
Consider the particle that is constrained to move along a curve described by y = x4. Find the equation of motion for small displacement about equilibrium
A cart of mass m1=0.5 kg moves with a velocity of 0.9 m/s to the right on a frictionless track. What is the velocity of each cart after the collision
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