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You are moving into an apartment and take the elevator to the 6th floor. Assume your weight is 650 Newton and that of your belongings is 990 N.
(a) Find the work done by the elevator in lifting you and your belongings up to the 6th floor (15.2 meter) at a constant velocity.
(b) Find how much work does the elevator do on you alone (without belongings) on the downward trip, which is also made at a constant velocity?
A spy satellite was launched into a circular orbit with a height of 318 km above the surface of the Earth. Determine its orbital speed and period
The arrangement is, in effect, a hollow tube of current 2.1A. find the magnetic field outside the cylinder
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An electrically neutral model airplane is flying in a horizontal circle on a 3.0m guideline, which isnearly parallel to the ground. The line breaks when the kineticenergy of the plane is 50.0 J. Reconsider the same situation, except that nowthere ..
A person takes in a breath of 10!C air and holds it until it warms to 37.2!C. The air has an initial volume of 0.73 L, find the work done by the air on the lungs
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What should be the spring constant of a spring designed to bring a 1500 car to rest from a speed of 80 so that the occupants undergo a maximum acceleration of 5.
An elementary particle of mass M completely absorbs a photon, after which its mass is 1.01M. (a) What was the energy of the incoming photon (b) Why is that energy greater than 0.01Mc^2
A laser peripheral iridotomy is a procedure for treating an eye condition known as narrow-angle glaucoma, in which pressure buildup in the eye can lead to loss of vision. How many photons does the laser deliver
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