With what objects do many of the millisecond pulsars appear to be associated, and what does this tell us about their age?
What will be an ideal response?
Many lie in globular clusters, which are very old. Because the globular clusters are also crowded, the chance of close binary mass transfers is also greater, which may explain how the old neutrons stars are sped back up in spin.
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The center of mass for Earth orbiting the Sun lies inside the Sun
Indicate whether the statement is true or false
Compared to the volume of its nucleus, the volume of an atom is about
A) the same. B) a thousand times greater. C) a million times greater. D) a billion times greater. E) a trillion times greater.
A skier leaves a ski jump with a horizontal velocity of 29.4 m/s. The instant before she lands three seconds later, the magnitudes of the horizontal and vertical components of her velocity are:
a. 0; 29.4 m/s. b. 29.4 m/s; 0. c. 29.4 m/s; 29.4 m/s. d. 29.4 m/s; 41.6 m/s. e. 41.6 m/s; 41.6 m/s.
What physical process results in the convection of thermal energy?
a. Collisions between the particles in a material. b. The movement of a fluid through a space. c. The energy exchange when a liquid becomes a gas. d. The energy transferred by electromagnetic waves traveling between objects. e. Brownian motion.