A small bead slides without friction along the wire shown. It ...

[daltonest1984]

A small bead slides without friction along the wire shown. It begins at A and slides by gravity past B, which doesn't touch the rest of the wire. The potential energy of the bead is greatest at point
 
  1) A,
  2) B,
  3) C,
  4) D,
  5) E,
 
  and the bead has its maximum momentum at point
  6) A.
  7) B.
  8) C.
  9) D.
  10) E.

Question 2

All things being practically equal, if the energy content in gasoline were doubled, then the distance a car should travel per liter of gasoline should
 
  1) be no different.
  2) double.
  3) quadruple.
 
  If the low-energy and high-energy fuels are burned in the same time, then compared to the POWER produced by combustion of the low-energy gasoline, the power produced by the combustion of the higher-energy gasoline should
  4) be no different.
  5) double.
  6) quadruple.

[diana chang]

Answer to Question 1

Answer: 1, 9

Answer to Question 2

Answer: 2, 5

[daltonest1984]

TYSM

[sultana.d]

Gracias!