Exfoliation
What will be an ideal response?
Removal of successive sheets of from a round boulder
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First Law of Thermodynamics: A monatomic ideal gas undergoes an isothermal expansion at 300 K, as the volume increased from 0.010 m3 to 0.040 m3. The final pressure is 130 kPa. What is the change in the internal (thermal) energy of the gas during this process? (R = 8.31 J/mol ? K)
A. 0.0 kJ B. 3.6 kJ C. 7.2 kJ D. -3.6 kJ E. -7.2 kJ
What is the maximum number of eclipses that can occur in a year?
A. 7 (four solar and three lunar) B. 4 (two solar and two lunar) C. 2 (one solar and one lunar) D. 7 (five solar and two lunar) or 7 (four solar and three lunar) E. 7 (five solar and two lunar)
The flat rotation curves of spiral galaxies tell us that they contain a lot of dark matter. Do they tell us anything about where the dark matter is located within the galaxy?
A) Yes, they tell us that dark matter is concentrated near the center of the galaxy. B) Yes, they tell us that dark matter is spread uniformly throughout the galactic disk. C) Yes, they tell us that dark matter is spread throughout the galaxy, with most located at large distances from the galactic center. D) No, we cannot determine anything about the location of dark matter from the rotation curve.
What is the inductance of a series RL circuit in which R = 1.0 K? if the current increases to one-third of its final value in 30 ?s?
a. 74 mH b. 99 mH c. 49 mH d. 62 mH e. none of the above