How Fast Is Lightning?

A red ball is thrown down with an initial speed of 1.2 m/s from a height of 25 meters above the ground. Then, 0.6 seconds after the red ball is thrown, a blue ball is thrown upward with an initial speed of 23.8 m/s, from a height of 0.

What is the wavelength of a sound wave that has a speed of 250m/s and a frequency of 400hz

Walking across the carpet is an example of charge being transferred by

An astronaut orbits planet Y in her spaceship. To remain in orbit at 410km above the planet's center, she maintains a speed of 68 m/s. What is the mass of planet Y? Note: the constant of universal gravity (G) equals 6.674 * 10-11 N ⋅ m2/kg2.

The amp is the basic unit of electrical A. current. B. voltage. C. power. D. energy.

According to the Theory of Continental Drift, what did the Earth's continents look like 255 million years ago?

What is the emf of a battery that increases the electric potential energy of 0.060 CC of charge by 0.70 JJ as it moves it from the negative to the positive terminal?

Why is gravitational potential energy negative?

What will happen to this current if a magnet is brought near the cord?

The kinetic energy of a sliding block came from the: kinetic energy of the string. kinetic energy of the board. gravitational potential energy of the block. gravitational potential energy of the mass on the hook.