Why doesn't the principle of mechanical energy conservation hold in situations when friction forces are present?

When Cannon and Washburn measured stomach contractions with a balloon, they found that?

Does a emp effect electronics it hits forever and does it fry it

A girl that has a mass of 55kg is standing on a floor, how much supporting force does the floor have?

In which direction does the moving force of air flow? from warm temperatures to cold temperatures from areas of high pressure to areas of low pressure from east to west from high elevations to low elevations

One cereal bar has a mass of 37g. what is the mass of 6 bars? is that more or less than 1kg? explain

Do you think it would be possible to compress a gas to zero volume

Describe how velocity and speed are different

The slope of a velocity versus time graph gives

Is work done if you carry a book across the room at a constant velocity? a. No, the force applied is parallel to the direction of motion. b. Yes, the force applied is parallel to the direction of motion. c.

8. A car moving at 35 m/s has 675 joules of KE. What is the mass of the car?