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a small disk of radius r=2.00 cm has been glued to the edge of a larger disk of radius R=9.00 cm so that the disks lie in the same plane. The disks can be rotated around a perpendicular axis through point O at the center of the larger disk. The disks both have a uniform density (mass per unit volume) of 1.40 × 103 kg/m3 and a uniform thickness of 7.00 mm. What is the rotational inertia of the two-disk assembly about the rotation axis through O?
A typical adult ear has a surface area of about 2.10 10-3 m2. The sound intensity during a normal conversation is about 3.20 10-6 W/m2 at the listener's ear. How much power is intercepted by the ear
q1. how numerous years would it take a thermally insulated one-million-kilogram chuck of granite to undergo a 1000k
A plastic bag is filled with nitrogen at atmospheric pressure and 27.0 oC. How large a volume of nitrogen (in m3) is required
Compute the force exerted on the palm of your hand by the beam of a 1.0W flashlight (a) if your hand absorbs the light and (b) if the light reflects off your hand
Assume that the water pressure at the bottom of a tree is -0.1 MPa and that the water pressure at the top of the tree is -1.5 MPa. What will be the maximum height of the tree
69 J of work are needed to stretch a spring from 1.4 m to 2.9 m from equilibrium. What is the value of the spring constant
A girl is using a rope to pull a box that has mass of 35kg across a level surface with constant velocity. What is the normal force of the floor on the box
A person walks first at a constant speed of 5 m/s along a straight line from point A to point B, How much distance does the person cover on her trip
What is moment of inertia
Two rigid rods are oriented parallel to each other and to the ground. The rods carry the same current in the same direction. The length of each rod is 0.80 m, Determine the current in the rods
A uniform solid disk with a mass of 28.3 kg and a radius of 0.514 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk, as drawing illustrates.
A cylindrical bucket, open at the top, is 29.0cm high and 12.0cm in diameter. How High will the water in the bucket rise
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