What is the minimum energy needed to lift 1.0 kg to a height of 200. km and to give it a speed of ...

What is the minimum energy needed to lift 1.0 kg to a height of 200. km and to give it a speed of 8.0 km/s? (Neglect the small decrease of g over that distance.)
 
  A) 34. TJ
  B) 34. kJ
  C) 34. MJ
  D) 34. GJ
  E) 34. J

Question 2

What happens to the velocity of sound in a gas when the absolute temperature of that gas is doubled?
 
  A) It doubles.
  B) It stays the same.
  C) It increases to 1.41 times its original value.
  D) It quadruples.

Question 3

If we allow for moisture loss due to a moist greenhouse effect, the inner boundary of the Sun's habitable zone would be
 
  A) just inside the orbit of the Earth
  B) roughly halfway between the orbits of Venus and Mercury
  C) roughly halfway between the orbits of the Earth and Venus
  D) just outside the orbit of the planet Mercury

Question 4

The electric field between the plates of a parallel plate capacitor is inversely proportional to the plate separation.
 
  Indicate whether the statement is true or false