When a red giant forms, the star’s core collapses inward and its outer layers spread out and cool. a. TRUE
b. FALSE

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

What’s #16 asking me and how do i solve it?

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .