The quantity 0.00325 × 10-8 cm is equivalent to
A) 3.25 × 10-12 mm.
B) 3.25 × 10-11 mm.
C) 3.25 × 10-10 mm.
D) 3.25 × 10-9 mm.
E) 3.25 × 10-8 mm.
C
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Would water molecules in Venus's atmosphere, whose temperature is 740 K, eventually es-cape into outer space? Note that a water molecule has a mass that is 18 times that of a hy-drogen atom. The escape velocity of Venus is 10 km/s. For comparison, a hydrogen atom has an average velocity of 2.5 km/s at a temperature of 300 K.
a. No, the average velocity of water molecules is 0.9 km/s. b. Yes, the average velocity of water molecules is 0.9 km/s. c. Yes, the average velocity of water molecules is 2.1 km/s. d. No, the average velocity of water molecules is 2.1 km/s. e. Yes, the average velocity of water molecules is 19 km/s.
A particle (mass = 6.7 × 10?27 kg, charge = 3.2 × 10?19 C) moves along the positive x axis with a speed of 4.8 × 105 m/s. It enters a region of uniform electric field parallel to its motion and comes to rest after moving 2.0 m into the field. What is the magnitude of the electric field?
A. 2.0 kN/C B. 1.5 kN/C C. 1.2 kN/C D. 3.5 kN/C E. 2.4 kN/C
Which nuclear fusion processes occur in Sun-like stars?
a. triple alpha b. CNO and triple alpha c. proton-proton and triple alpha d. All of the other choices are correct.
Based on their optical design, would an airline rather you bring your 8" Newtonian or Cassegrain to the next eclipse? Why?
What will be an ideal response?