What is the Tully-Fisher relation?
What will be an ideal response?
A galaxy's total luminosity is determined by its mass, which can be observed from its rotational speed. The faster it is spinning, the more luminous it is.
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The period of oscillation of a near-Earth satellite (neglecting atmospheric effects) is 84.3 min. What is the period of a near-Moon satellite? (RE = 6.37 × 10^6 m; RM = 1.74 × 10^6 m; ME = 5.98 × 10^24 kg; MM = 7.36 × 10^22 kg.)
a. 6.03 × 10^-3 min. b. 0.713 min. c. 84.3 min. d. 108 min. e. 140 min.
A hypernova is one of several types of events that create a gamma ray burst
a. True b. False Indicate whether the statement is true or false
Mercury's surface most resembles which of these?
A) the Earth's deserts B) the lunar far side C) the lunar mare D) Venus' polar regions E) Mars' deserts
The first law of thermodynamics states that the increase in internal energy of a system is equal to
A. the amount of heat added to the system amount of work done on the system minus the B. the amount of heat added to the system amount of work done on the system plus the C. the amount of heat added to the system amount of work done by the system minus the D. the amount of heat added to the system amount of work done on the system minus the