As altitude increases, the required orbital speed of a satellite:

decreases

increases

remains the same

Two identical objects A and B fall from rest from different heights to the ground. If object B takes twice as long as A to reach the ground, what is the ratio of the heights (A:B) from which the two objects fell? Neglect air resistance.

Which of the following elements is considered to be a non-metal?

If we increase the speed of rotation of wheel then the sound produced by cardboard touching the spokes of the wheel will become A) shrill (b) grave (c) remains the same

What is the first step of the hydrogen fusion process?

How many joules of work are done on an object when a force of 10 N pushes it 5 m? A) 2 J B) 5 J C) 50 J D) 1 J E) 10 J

A 6.0 kg box slides down an inclined plane that makes an angle of 39° with the horizontal. If the coefficient of kinetic friction is 0.19, what is the magnitude of the acceleration, in m/s2, of the box down the slope?

Identify the following as a suspension or a colloid. sand in water

A cyclist starts at a position of 0 m and takes 3 s to move east to a position of + 8 m. He then cycles west to a position of + 5 m which takes an additional 2 s. What is the cyclist's displacement? a. + 11mb. - 8mc. - 5m d. + 5m

What happens when you shoot a bullet into the sky?

If you want to lift a 5-kg box to a height of 2 meters, how much work must be done? O A. 2J O B. 50 J O C. 98 J O D. 100