What is calculated by speed of light/wavelength?

At 1 kilometer per year, how many centuries would it take for people to move from africa to china which is 10,000 kilometers away-

The table re[resents the forces on four objects, with directions. Object F1 ↑ F2 → F3 ← F4 ↓ W 30 N 20 N 20 N 30 N X 15 N 35 N 25 N 15 N Y 60 N 0 N 0 N 60 N Z 45 N 0 N 22 N 45 N Which best explains the forces acting on the objects?

If a motor lifts a 400.-kilogram mass a vertical distance of 10. meters in 8.0 seconds, the minimum power generated by the motor is (1) 3.2 * 10^2 W (3) 4.9 * 10^3 W (2) 5.0 * 10^2 W (4) 3.2 * 10^4 W

An electrolyte is always a liquid.

A satellite of mass m is moving in a circular orbit around the earth at a constant speed v and at an altitude h above the earth's surface. a. find the speed of a satellite orbiting the earth 1000 km above its surface.

Which of the following conditions is not necessary to observe an interference pattern between two sets of waves? A) The waves must have the same wavelength. B) The waves must have a constant phase difference.

Calculate the change in velocity of 70 kg object being pulled with 1000N force force 10 s

Which reaction obeys the law of conservation of mass?

Smaller bits of rock that pass through the atmosphere and slam into Earth's surface are called a. asteroids. b. meteors. c. meteorites. d. meteoroids.

What is the conversion from 1.2 mm to m