Consider an asteroid that orbits the Sun once every 5 years. Does this object ever cross the Earth's orbital path?
1.Yes, it must cross twice every five earth years.
2.No, it can never cross Earth’s orbital path.
3.Yes, it must cross once every Earth year.
4.It is impossible to tell.
4
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For all adiabatic processes:
A. the entropy of the system does not change B. the entropy of the system increases C. the entropy of the system decreases D. the entropy of the system does not increase E. the entropy of the system does not decrease
What is the role of dust in the condensation theory?
What will be an ideal response?
An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the plane were to fly in the same 500-m circle at a speed of 300 m/s, by what factor would its centripetal acceleration change?
a. 0.25 b. 0.50 c. 1.00 d. 2.00 e. 4.00
A engine manufacturer makes the claim that the engine they have developed will, on each cycle, take 100 J of heat out of boiling water at 100°C, do mechanical work of 80 J, and exhaust 20 J of heat at 10°C
What, if anything, is wrong with this claim? A) The heat exhausted must always be greater than the work done according to the second law of thermodynamics. B) This engine violates the first law of thermodynamics because 100 J + 20 J ? 80 J C) An engine would operate by taking in heat at the lower temperature and exhausting heat at the higher temperature. D) The efficiency of this engine is greater than the ideal Carnot cycle efficiency. E) There is nothing wrong with this claim because 100 J = 20 J + 80 J.