Approximately how much of the planet is covered in water?

A. one half

B. two-thirds

C. one-fourth

D. three-fourths

If launched at the right speed, what could eventually happen to objects launched from Newton's theoretical cannon on the top of a mountain?

Which does not contain a lens? A. a floodlight B. eyeglasses C. a glass eye D. a jeweler's loop

Taro stated that when someone hits a golf ball with a club, the amount of energy the ball has changes, the amount of energy that the club has changes, and the total energy of the system that includes the ball and the club increases.

Forces that affect objects without touching them are called field forces. Is gravity a field force? Explain.

Why is water important in cells?

How would life on earth be different if earth's axis were not tilted with respect to its orbit? A. There would be no seasons. B. There would be no day and night. C. All places would have the same climate. D. The seasons would be much shorter.

What will a spring scale read for the weight of a 75.0-kg woman in an elevator that moves upward with constant speed of 5.8 m/s?

What's the definition of: • cellular respiration • photosynthesis

What are the steps that are important to take for your safety during an earthquake? a. stay away from walls and windows c. stay away from electrical and gas lines b. get under a desk or table d. all of the above

You have an open air column of length 1.40 m in air at 24.2 °C. What is the frequency of the third harmonic?