Why e=mc2? why not e=mc3?

If the ball hits olaf and bounces off his chest horizontally at 8.50 m/s in the opposite direction, what is his speed vf after the collision? express your answer numerically in meters per second.

If you shine a beam of red light and a beam of green light on the same area of a screen, what color will you see on the screen?

Why does a satellite in a circular orbit travel at a constant speed? why does a satellite in a circular orbit travel at a constant speed? there is a force acting opposite to the direction of the motion of the satellite.

Which of the following is the strongest claim? A. a claim that has been made multiple times by the smartest scientist B. a claim that is supported by a complex experiment that lasted 6 months C.

7. There is no gain in mechanical advantage in a single fixed pulley. En why the pulley is then used.

The magnetic flux through each turn of a 110-turn coil is given by ΦB = 9.75 ✕ 10-3 sin (ωt), where ω is the angular speed of the coil and ΦB is in webers. At one instant, the coil is observed to be rotating at a rate of 8.70 ✕ 102 rev/min.

A comet has a period of 324 years; in other words, it orbits the Sun in 324 years. Most likely, this comet came from ... (Hint: 324 years define a long period comet) A. Somewhere outside the solar system B. Oort's cloud C. The ecliptic plane D.

4. A pendulum oscillates 12 times in 4 seconds. a. What is the frequency of the pendulum's oscillations? b. What is the period of the pendulum's oscillations?

How many protons and electrons are present in a vanadium atom?

A dog runs 27 m in 3 s. what is the dogs average speed. a 9 m/s b 24 m/s c 30 m/s d 81 m/s