Two hours of moderate exercise every week can reduce the risk of developing heart disease by 30%.

How is a boomerang different from a airplane propeller

would an elephant standing on one leg exert a higher force on a scale than an elephant on four legs. why

Why does turning on the television cause the resistor to heat up?

How does the pupillary response prevent injury? What would happen without it?

You walk with a velocity of 2 m/s north. You see a man approaching you, and from your frame of reference he has a speed of 3 m/s to the south.

Can you get sunburned through glass?

Which statement about a signal transduction pathway is true? a. A signal transduction pathway provides a means for a signal molecule to pass through the cell membrane and initiate a chain of events inside the cell. b.

If a car is traveling on the highway at a constant velocity, the force that pushes the car forward must be A. greater than the force of friction exerted upon the car. B. less than the force of friction exerted upon the car. C.

Tom stops using a new skin cream for five days to determine if the cream is the cause of a recent rash. What stage of the scientific method is Tom using?

Use your observations to determine qualitatively how the strength of the electric interaction between charged objects depends on the distance between them. Explain your reasoning (this is trickier than it might seem at first).