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A uniform 0.25-kilog thin rod that has an 80-centimeter length is free to rotate about a fixed horizontal axis perpendicular to and through one end ram of the rod. It is held horizontal and released. Instantly after it is released,
(a) Determine the acceleration of the center of the rod, and
(b) Find the initial acceleration of the free end of the rod?
(c) Calculate the speed of the center of mass of the rod when the rod is (momentarily) vertical?
Suspend an ideal spring vertically from a ceiling and attach an object to the other end and then slowly lower the object until the upward force exerted by the spring on the object balances the weight of the object.
Bored, a boy shoots his pellet gun at a piece of cheese that sits, keeping cool for dinner guests, on a massive block of ice. On one particular shot, his 1.4 g pellet gets stuck in the cheese, causing it to slide 25 cm before coming to a stop. If the..
It takes the elevator in a skyscraper 4.1s to reach its cruising speed of 13m/s. A 68kg passenger gets aboard on the ground floor. find the passenger's weight before the elevator starts moving
A movable piston having a mass of 7 kg and a cross-sectional area of 6 cm2 traps 0.17 mol of an ideal gas in a vertical cylinder. The piston slides without friction in the cylinder. The outside of the cylinder is kept at atmospheric pressure, 1.01..
A uniformly charged wire or radius R1=0.02m runs down the axis of a cylinder of inner radius R2=0.06m. Find the electric field at the surface of the wire
The potential difference between two parallel conducting plates in vacuum is 165 V. An alpha particle with mass of 6.50×10-27 kg and charge of 3.20×10-19 C is released from rest near the positive plate. What is the kinetic energy of the alpha particl..
A swimming duck paddles the water with its feet once every 1.8sec,producing surface waves with this period. How far apart are the crests behind the duck
The basic function of an automobile's carburetor is to atomize the gasoline and mix it with air to promote rapid combustion
an interesting but oversimplified model of an atom pictures an electron in orbit around a proton. suppose this electron
Radius of rotation of the hanging mass in apparatus in lab M20a is set to 10.0 cm. Determine the centripetal force and suspended mass
A student is about to do a push-up. Her center of gravity lies directly above P on the floor, which is 0.9 m from her feet and 0.5 m from her hands. what is the force exerted by the floor on her hands
After the reorganization, Barbara owns 25% of Acme's stock. Barbara has an adjusted basis of $400,000 in her Fisher stock. Barbara's basis for her Acme securities is?
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