A student pushes a 40-N block across the floor for a distance of 10 m. How much work was applied to move the block?

A.

4 J

B.

40 J

C.

400 J

D.

4000 J

Two objects are dropped from a bridge, an interval of 1.0 s apart. Air resistance is negligible. During the time that both objects continue to fall, their separation A) increases. B) decreases. C) stays constant.

Two or more velocities add by

A tugboat pulls a ship with a constant net horizontal force of 5.00 * 103 N and causes the ship to move through a harbor. How much work is done on the ship if it moves a distance of 3.00 km?

Which of the fluids below would produce the highest pressure at the bottom of a tank for the same fluid depth? a. mercury b. air c. water d. helium?

What would i see if i were to walk along a beam of light

Why are large astronomical bodies round

What would provide specific information about the materials in the equipment used in a certain experiment

The second harmonic of a guitar string has a frequency of 120 hz. what is the length of the guitar string if the speed of the waves on the string is 110 m/s?

Which of the following processes is NOT a chemical change? A burning candles B cooking an egg C grilling a steak D mowing grass

In the diagrams, the solid green line represents Earth's rotational axis and the dashed red line represents the magnetic field axis. Which diagram accurately shows Earth's magnetic field?