During an isothermal process, 5.0 J of heat is removed from an ideal gas. What is the work done in the process?
A. zero
B. -5.0 J
C. +5.0 J
D. none of the above
B. -5.0 J
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Satellite Motion: You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 1.8 × 107 m. You have previously determined that the planet orbits 2.9 × 1011 m from its star with a period of 402 earth days. Once on the surface you find that the acceleration due to gravity is 19.5 m/s2. What are the masses of (a) the planet and (b) the star? (G = 6.67 × 10-11 N ? m2/kg2)
A. (a) 2.4 kg × 1025 kg, (b) 1.2 kg × 1031 kg B. (a) 4.3 kg × 1025 kg, (b) 1.2 kg × 1031 kg C. (a) 2.4 kg × 1025 kg, (b) 7.1 kg × 1030 kg D. (a) 4.3 kg × 1025 kg, (b) 7.1 kg × 1030 kg
Drag within the solar nebula is responsible for hot Jupiters
Indicate whether the statement is true or false
Both nuclear reactors and atomic bombs use nuclear chain reactions
a. True b. False Indicate whether the statement is true or false
When uranium-238 (Z = 92) is bombarded with a neutron, it can change into uranium-237
a. True b. False Indicate whether the statement is true or false