Describing the Big Bang Theory Which statement accurately describes the origin and expansion of the universe?

As the universe continues to expand, it gradually gets warmer.
Galaxies that are farther away are moving away more slowly.
Cosmic background radiation is leftover thermal energy from the big bang.
Stars and galaxies formed almost immediately after the big bang occurred.

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight

Why do astronauts in the space shuttle weigh less?