In "The Heart Part I", Hank mentions that the heart is a pump that is trying to do what? Move blood from an area of high pressure to an area of low pressure
Move blood from an area of low pressure to an area of high pressure
Keep a balance of pressure throughout the body
Love

What is the magnitude of the resultant vector round your answer to the nearest tenth

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

If steel is more dense that lake water, why can a boat float