Feeling slightly uncomfortable during exercise

A. is completely normal and is to be expected.

B. means that you're completely out of shape.

C. can indicate that there's a problem with your heart.

On average, the Moon is three hundred and eighty thousand km (kilometers) from the Earth. How is this quantity expressed as a number?

What is electricity? Why does it happen?

1. Wile E. is shot upward from a cannon with vi = 50 m For each second, record the displacement. Then dete the instantaneous velocity at each second.

The velocity of any wave can be calculated from its frequency and wavelength. How fast (in meters per second) is a wave moving if its six waves go by in a second and its wavelength is two meters? A. 1/3 B. 3 C. 8 D. 12

Which statement describes how a covalent molecule would be formed? A) an atom of an element with atomic number 12 reacts with one oxygen atom B) an atom of an element with atomic number 8 reacts with two hydrogen atoms C) an atom of an element with

Which electromagnetic waves have a higher frequency than visible light

Calculate the speed for a car that went a distance of 125 miles in 2 hours time

A small 25 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?

A car traveling on a flat (unbanked), circular track accelerates uniformly from rest with a tangential acceleration of 1.85 m/s2. The car makes it one quarter of the way around the circle before it skids off the track.

A train travels 120 km in 2 hours and 30 minutes what is the average speed