What is the reading on the scale
A person with a mass of 50 kg is standing on a scale in an elevator that is accelerating upwards at a rate of 3.2 m/s2. What is the reading on the scale (the apparent weight)?
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If the volume of the air in the tank is 2 cubic meters, find the increase in entropy of the air during the process. Assume that the specific heat of the air is constant.
A building is being knocked down with a wrecking ball, which is a big metal sphere that swings on a 13-m-long cable. You are (unwisely!) standing directly beneath the point from which the wrecking ball is hung when you notice that the ball has jus
Compare air and helium as cooling media for electronic devices. Both fluids must exit through an area of 0.025 m^2. The exit temp is limited to 60 c the inlet temp can be as low as 10 c and as high as 25 c .
Tangshan china company balance sheet shows total assets of 60 million, total liabilities (including preferred stock) of 45 million, and 1,000,000 shares of common stock outstanding.
X is 50 years old, unmarried without children, and has earnings during 2011 of $8,000. He is not claimed as a dependent on another taxpayer's return. Does he qualify for the earned income credit?
A 300g ball is tied to a string. It is pulled to an angle of 4.00 degrees and released to swing as a pendulum. A student with a stopwatch finds that 8.0 oscillations take 14.0s. How long is the string? answer in cm.
Assume that the positively charged particle starts at point A with an initial velocity in the positive x-direction. write down the expression for the position of the particle as a function of the particle as a function of time, x(t), in terms of t
Determine the surface temperature of the top of the puck after an 83 MPH (37 m/s) slapshot from center ice by Paval Datsyuk. The ice temperature is -4°C.
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