All systems have what

1. output and feedback,

2. process and function,

3. input and process and output,

4. input and output and sensors

A horizontal force of 200N is applied to a 55kg cart across a 10m level surface. If the cart accelerates at 2.0m/s^2, then what is the work done by the force of friction as it slows the motion of the cart?

What happens to electric charges within a conductor when a charged object is brought close to it

Wind speed is rounded off to the nearest 5 knots and is symbolized by "feathers" drawn on the clockwise side of the wind-direction shaft. A full feather represents 10 knots (11.5 mph) and half feathers indicate 5 knots.

D=vt + (1/2) at^2 solve for v

What happens to the air temperature of a descending mass of air?

What is mummification?

Order the steps to describe how information is sent. A signal is produced. A signal is seen, heard, or used. Radio waves are modulated and amplified. Radio waves are amplified and demodulated.

The national grid supplied a house with 18000000 J of energy in 1 hour. What was the average current supplied to the house in that hour? Write any equations that you use.

Claudia throws a baseball to her dog. Which free-body diagram shows the baseball when it's flying horizontally in midair? (Assume no air resistance.)

Which of the following substances will show the smallest change in temperature when equal amounts of energy are absorbed? water air sand concrete