According to the Big Bang theory, after the "Bang", the universe remained dark until about ___ later, when neutral atoms began form.

*three minutes

*one billion years

*300,000 years

*three billion years

How many moons does jupiter have?

Lucas plugs a lamp into the wall. The light bulb in the lamp turns on. What kind of energy transformation is this? A. Light energy is transformed into electrical and mechanical energy. B. Electrical energy is transformed into light and heat energy.

Do transparent objects absorb light?

Two 4.2 kg masses are connected to each other by a spring with a force constant of 28 N/m and a rest length of 1.0 m. If the spring has been compressed to 0.80 m in length and the masses are traveling toward each other at 0.

When a force of 15 newtons is applied to a stationary chair, it starts moving. What can you say about the frictional force between the chair and the floor of the room? A.

A sample of blood is placed in a centrifuge of radius 12.0 cm. The mass of a red blood cell is 3.0 ✕ 10^-16 kg, and the magnitude of the force acting on it as it settles out of the plasma is 4.0 ✕ 10^-11 N.

A guitar string produces 3 beats/s when sounded with a 352-hz tuning fork and 8 beats/s when sounded with a 357-hz tuning fork.

4. The amount of distance you need to stop the car increases with specu. A. true B. false

What are the three most abundant gases in the dry atmosphere?

What happens when you open a soda? Why?