Which chemical is released by brain cells along an activated reward pathway?

What is the difference in light that is refracted compared to light that is reflected? Think in terms of speed of light as well as what happens to light waves when they interact with a medium.

Which of the following is a solution?

What is the momentum of a 56-kilogram ice skater gliding across the ice at a speed of 12 m/s? kg-m/s

How much sweat (in ml) would you have to evaporate per hour to remove the same amount of heat a 90.0 w light bulb produces? (1w=1j/s.) ?

The energy of atoms and molecules due to their motion is?

A microwave oven operating at 120 volts is used to heat a sandwich if the oven draws 12.5 amperes of current for 45 seconds what is the power dissipated by the oven?

Which of the transformers are step-up transformers? Which of the transformers are step-down transformers?

1 A plane moving at 30m/s drops a load 200m down to the ground. How long did it take to hit the ground.

Can a body be in equilibrium if it is in motion? Explain

What is the average speed in kilometers per second of the earth around the sun?