How do fish breathe

Your brother's mass is 40.0 kg, and he has a 1.30 kg skateboard. what is the combined momentum of your brother and his skateboard if they are going 8.50 m/s?

Osmotic pressure is created by the presence in a fluid of small diffusible molecules that easily move through the capillary membrane.

A plane flies with an average velocity of - 98.5 m/s for 45.0 s. What was its displacement?

If you push horizontally on your book with a force of 1 N to make the book slide at constant velocity, how much is the force of friction on the book?

What is the formula for potential energy?

You are standing against the wall near a corner of a large building. A friend is standing against the wall that is around the corner from you. You can't see your friend. How is it that you can hear her when she talks to you?

What is general relativity in easy terms?

Temperature and volume are directly or inversely

My Notes A basketball rolls across a classroom floor without slipping, with its center of mass moving at a certain speed. A block of ice of the same mass is set sliding across the floor with the same speed along a parallel line.

How does sound travel through waves?