The Joule (J) is a unit of : kinetic energy

electric energy

potential energy

work all of the above

If i play two pure tones, one at 100 hz and the other at 110hz, will we perceive beats? if so, what will be the beat frequency

A normal human heart, beating about once per second, creates a maximum 4.00-mv potential across 0.250 m of a person/'s chest, producing a 1.00-hz electromagnetic wave. what is the maximum electric field strength produced?

Why do snow shoes stop us from sinking

Use Newton's second law of motion to solve the following problems. ron bicycles forward with an acceleration of 2.1 m/s^2 if he is applying a forward force of 195N, what is his mass

What does Astronomy mean?

A horse canters away from its trainer in a straight line, moving 37 m away in 9.1 s. It then turns abruptly and gallops halfway back in 1.8 s. Calculate its average speed for the entire trip. Express your answer using two significant figures.

An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. When the craft was stationary, the tension in the cable was 7000 N {/rm N}.

What are the components of earths life support system

A car is moving with a velocity (3.0 m/s) € x ˆ + (1.0 m/s) € y ˆ and 3.0 seconds later its velocity is (6.0 m/s) € x ˆ - (3.0 m/s) € y ˆ. What is the direction of the average acceleration of the car?

When water vapor condenses on the inside of a window, the window becomes