The pair of protons in the nucleus of a helium atom
A) attracts a pair of orbiting electrons.
B) repels orbiting electrons.
C) both of these
D) neither of these
Answer: A
You might also like to view...
To increase usability, take care to place important content, such as logos, names, CTAs, and major links, ______ of potential scroll lines.
A. above and to the right B. above and to the left C. below and to the right D. below and to the left
Two objects, one less massive than the other, collide elastically and bounce back after the collision. If the two originally had velocities that were equal in size but opposite in direction, then which one will be moving slower after the collision?
a. The less massive one. b. The more massive one. c. The speeds will be the same after the collision. d. There is no way to be sure without the actual masses.
Winds are generated on Earth primarily because of
a. strong updrafts from the equator and air sinking near the poles. b. uneven heating of the surface and rotation of the planet. c. water condensation onto mountains. d. hot air rising and cool air sinking.
If a 10°C piece of iron is heated until it has twice as much internal energy, its temperature will be
A) 20°C. B) 273°C. C) 293°C. D) 566°C. E) none of the above