Please help 50 points given not cap The sun is too big to be a star.
True or False
The stars in a constellation are close together
True or False
Though stars appear very small, they are actually very big.
True or False

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2