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A wheel is rotating freely at angular speed 760 rev/min on a shaft whose rotational inertia is negligible. A second wheel, initially at rest and with 3 times the rotational inertia of the first, is suddenly coupled to the similar shaft.
(a) Find the angular speed of the resultant combination of the shaft and two wheels?
(b) Find what fraction of the original rotational kinetic energy is lost?
while crossing campus you get your directions mixed up. you start traveling 283 m east you then travel 135 m traveling
A brass rod with a length of 1.40m and a cross-sectional area of 2.37cm2 is fastened end to end to a nickel rod with length L and cross-sectional area 0.720cm2, What is the strain in the nickel rod
A nail gun fires a nail into a piece of wood. The nail is going a velocity of 9.0 m/s right before entering the wood. The mass of the nail is 0.060 kg, how far into the wood does the nail go
A thin, square, conducting plate 42.0 cm on a side lies in the xy plane. A total charge of 4.20 10-8 C is placed on the plate. You may assume the charge density is uniform. (a) Find the charge density on each face of the plate. C/m2 (b) Find the elec..
A coin with a diameter of 1.7 cm is dropped on its edge onto a horizontal surface. It starts rolling with an initial angular speed of 15.3 rad/s and rolls in a straight line without slipping.
A 3.0 kg mass is supported by a steel wire of diameter 0.60 mm and length 1.4 m. How much will the wire stretch under this load
a projectile passes point a with a velocity v upward. at some time later the projectile passes point b with a velocity
a 3-kg object attached to a spring oscillates on a smooth horizantial surface. its position versus time is given by the
Water flows at 0.56 m/s during a pipe 16 cm in diameter when the pressure is 460,000 Pa. Decide the water velocity and the pressure in the pipe are if it shrinks down to 5 cm in diameter. You can assume that the pipe is horizontal and ρwater = 1000k..
Objects A and B are both positively charged. Both have a mass of 138 g, but A has twice the charge of B. How large is the electric force (in N) on A
An airplane is in level flight at a velocity of 138m/s and at an altitude of 1500m when one of its wheels falls off. How long does it take the wheel to reach the ground? What horizontal distance will the wheel travel before it strikes the ground?
You and your friends are doing physics experiments on a frozen pondthat serves as a frictionless, horizontal surface. Sam, withmass 80.0 kg, is given a push and slides eastward. What was the speed of each person before the collision
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