Time Dilation: A muon at rest decays in 2.2 ?s. Moving at 99.00% the speed of light, it would be seen to "live" for how long?
Fill in the blank(s) with the appropriate word(s).
16 ?s
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An external interaction exerts a force on a certain system as the place where the force is applied moves a displacement
. Which of the following is the correct component expression for the work done by the interaction on the system?
A. W = [Fx dx, Fy dy, Fz dz] B. W = ?[Fx dx, Fy dy, Fz dz]? C. W = Fx dx + Fy dy + Fz dz D. Some other expression (specify)
A condenser for a large refrigerator is a four-shell-eight-tube-pass heat exchanger. The condensing fluid is ammonia at 40ºC and the overall heat transfer coefficient is 500 W/m^2?K. 10 kg/s of water at 5ºC, heated to 30ºC, is used to cool the ammonia. Determine the mass flow of ammonia if its heat of vaporization is 1102 kJ/kg and then determine the surface area of the heat exchanger.
What will be an ideal response?
After seeing a flash of lightning, if one counts the seconds before hearing the thunder, one can estimate the distance to the flash. How many seconds delay
(a) per mile? (b) per kilometer?
A boy on a bicycle approaches a brick wall as he sounds his horn at a frequency 400.00 Hz. The sound he hears reflected back from the wall is at a frequency 408.00 Hz
At what is the speed is the boy riding his bicycle toward the wall? Assume the speed of sound in air is 340 m/s. A) 3.68 m/s B) 333 m/s C) 6.67 m/s D) 6.80 m/s E) 3.37 m/s