How does a fixed pulley act as a machine?

On the surface of Earth, a spacecraft has a mass of 2.00 x 10⁴ kilograms. What is the mass of the spacecraft at a distance of one Earth radius above Earth's surface? (1) 5.00 * 10³ kg (2) 2.00 * 10⁴ kg (3) 4.90 * 10⁴ kg (4) 1.96 * 10⁵ kg

What process allows radios to receive signals even when they are not in line of a tower? a. Refraction c. Diffraction b. Reflection d. Amplification

Two students spotted some white, eyeless crayfish in the darkness. Why are the crayfish eyeless? A. They have long legs, so they don't need eyes. B. They are white, so they don't need eyes. C.

Arrange the events in order likely to occur leading up to the formation of a solar system

A man with a mass of 80 kg is standing on the edge of a table 1.5 m above the ground. what is the man's gravitational potential energy?

What eventually happened to the carbon dioxide in the atmosphere of early earth

Why arent insulators allowed in operating rooms

What does Kepler's second law state? A. Planets travel in ellipses. B. Planets sweep equal areas in equal times. C. A planet's apparent backward movement is termed retrograde motion. D.

Why do charges build up in a cloud

How does the wave model of electrons orbiting the nucleus account for discrete energy values?