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Chapter 28: Q2CQ (page 1028)
Is Earth an inertial frame of reference? Is the Sun? Justify your response.
Because the Earth and the sun both move in circles, neither is an inertial frame of reference.
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The mass of the fuel in a nuclear reactor decreases by an observable amount as it puts out energy. Is the same true for the coal and oxygen combined in a conventional power plant? If so, is this observable in practice for the coal and oxygen? Explain.
(a) Using data from Table\(7.1\), find the mass destroyed when the energy in a barrel of crude oil is released.
(b) Given these barrels contain\(200\)litres and assuming the density of crude oil is\(750{\rm{ }}kg/{m^3}\), what is the ratio of mass destroyed to original mass,\(\Delta m/m\)?
(a) A nuclear power plant converts energy from nuclear fission into electricity with an efficiency of\(35.0\% \). How much mass is destroyed in one year to produce a continuous\(1000{\rm{ }}MW\)of electric power?
(b) Do you think it would be possible to observe this mass loss if the total mass of the fuel is\({10^4}{\rm{ }}kg\)?
Suppose you use an average of\(500{\rm{ }}kW.h\)of electric energy per month in your home.
(a) How long would\(1.00{\rm{ }}g\)of mass converted to electric energy with an efficiency of\(38\% \)last you?
(b) How many homes could be supplied at the\(500{\rm{ }}kW.h\)per month rate for one year by the energy from the described mass conversion?
Is the relativistic Doppler effect consistent with the classical Doppler effect in the respect that\({{\rm{\lambda }}_{{\rm{obs}}}}\)is larger for motion away?
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