Which of these questions are unit rates? a.) crystal bought 2 pairs of shoes for $30.
b.) dallas ran 12 km in an hour.
c.) hugh made 17 tables in 4 days.
d.) jorge typed 222 words in 4 minutes.
e.) there were 56 berries in one pie.

Gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud

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.

Why do astronauts in the space shuttle weigh less?