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Q. A uniform 30-lb beam 10ft. long is carried by two men A and B, one at each end of the beam. (a) If A exerts a force 25-lb, where must a load of 50-lb.be placed on the beam? (b) What force does B exert?
Q. When two tuning forks of 146 Hz and 161 Hz, respectively, are sounded simultaneously, how many beats per second are heard?
What is the stopping distance when the surface is dry and the coefficient of friction is 0.620.
What is wavelength in meters of an electron
As you sit facing your computer screen, electrons are directed from a source at the back of the computer toward you and are deflected by a magnetic field. Which direction must the magnetic field be oriented in order to direct the electrons to the ..
What is the terminal speed at which the bar falls.
A Federation starship (7.5 multiplied by 106 kg) uses its tractor beam to pull a shuttlecraft (5.0 multiplied by 104 kg ) aboard from the distance of 12 km away.
Clarify how Einstein's contribution to understanding the force between the earth and the moon differed from Newton's. Include a short statement of Einstein's explanation in the answer.
A 1110 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960 N crate hangs from far end of beam.
What is the tension in the string
A 100 ball on a 60 long string is swung in a vertical circle whose center is 200 above the floor. The string suddenly breaks when it is parallel to the ground and the ball is moving upward. The ball reaches a height 600 above the floor.What is the..
Using and Atwood machine with masses m1 and m2, at first with m1 a distance 2h above m2, what is the speed of either mass they pass each other? Make use of energy to solve (hint they cross halfway between the starting positions of the two masses).
A worker on a scaffolding 65 ft above the ground needs to lift a 390 lb bucket of cement from the ground to a point 30 ft above the ground by pulling on the rope weighting 2 lb/ft . Set up the integral of how much work is required (just give the i..
How much energy transfer as the reason of a temperature difference was there from the stove into the system consisting of the water plus the pan.
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