Scissors are considered a compound machine because
they are made of two inclined planes
they are made of a lever and a wedge
they make work easier

Assume similar data for the motion of the blood in your aorta. estimate how many beats of the heart it will take the blood to get from your heart to your brain. (assume that the distance from your heart to your brain is 30 cm)

What do you think car designers do if the damage caused by a crash test is too severe?

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery