A machine is designed to lift an object wit a weight of 12 Newton's if the input for the machine is set at 4 Newton's what is the mechanical advantage of the machine

Which is a characteristic of a step-up transformer? a:There are fewer loops in the secondary coil than in the primary coil. b:It converts direct current into alternating current.

How do you explain the fact that sometimes less work is done in a situation in which more force is used than in a situatio in which less force is used

What is the difference between speed and velocity? A. Speed and velocity both measure an object's change in position per unit time, but velocity also depends upon the object's direction of motion. B.

A flying airplane is affected by which force or forces

Why is there a difference in air pressure at sea level as compared to mountain tops?

Jeff puts on a leather jacket over his sweater. The sweater becomes negatively charged. Which statements about Jeff's situation are true?

You hit the wall with a stick. The equal but opposite reaction is?

What happens to a light wave traveling through diamond that strikes a boundary with water at a 45 degree angle? (APEX) a. it refracts in the water, toward the boundary b. it reflects back into the diamond in the direction it was traveling from c.

Which tools would sara us to find an irregularly shaped objects mass and volume A. a meter stick, a ruler, and water B. a meter stick, a balance, and water C. a balance, water, and a ruler D. a balance, water, and a beaker

Scientists who study races and their origins are called A. anthropologists. B. ethnologists. C. paleontologists. D. sociologists.