What is the definition for relative motion

When is the absorption spectrum of an electron generated A. when an electron in an atom is excited to a higher energy state B. when an electron in an atom is in the excited state C.

What happens to an object as its kinetic energy increases?

If a mass D is greater than a F, the center of mass F would be closer than that of the mass D?

What is the right size hockey jersey for me?

a ball moves at a constant speed of 1/2 meter per second. How much time does it take the ball to move 1 meter?

What is a radio interferometer? a device for correcting chromatic aberration in radio telescopes a device for absorbing and transmitting radio waves a network of several radio telescopes wired together a radio communication network joining several

In which galaxy is our solar system located? a. milky way b. ngc 4414 c. andromeda d. small magellanic cloud

Two astronauts, of masses 60 kg and 80 kg, are initially right next to each other and at rest in outer space. They suddenly push each other apart. How far has the heavier astronaut moved when the lighter astronaut has moved 12 m

A person suffering from anaemia gets tired

Jessica took a Mylar balloon outside on a very hot day. As she waited for the bus the balloon began to get bigger. What is the best explanation of this?