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

Physics & Space Science

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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

Physics & Space Science

Drag within the solar nebula is responsible for hot Jupiters

Indicate whether the statement is true or false

Physics & Space Science

Both nuclear reactors and atomic bombs use nuclear chain reactions

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

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

Physics & Space Science