The noble gases are essentially non-reactive. this is because a. they are all rare gases. b. their inner electron shells are all full. c. their valence electron shells are all full. d. they are in need of more valence electrons.

Which type of microscope would allow the viewer to see ribosomes inside a cell?

A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?