At 2.5 seconds, the helicopter has a kinetic energy of 20 J. What is its mechanical energy at that time?

A student constructed a series circuit consisting of a 12.0-volt battery, a 10.0-ohm lamp, and a resistor. The circuit does not contain a voltmeter or an ammeter. When the circuit is operating, the total current through the circuit is 0.50 ampere.

At what location in a circuit is the electrical potential energy the greatest

Which object extends farther from the nucleus of the Milky Way galaxy? The spiral arms The halo The bulge The disk

Two round concentric metal wires lie on a tabletop, one inside the other. The inner wire has a diameter of 23.0 and carries a clockwise current of 20.0, as viewed from above, and the outer wire has a diameter of 38.0.

Surface waves move only in a back and forth motion. True False

Why does the speed of an object change when a force acts on it?

What are factors that would change the position of the wave lengths measured? (There are more than one answer.) a) size of the tube b) tuning fork frequency c) distance between the tuning fork and tube d) room temperature e) area of the tube

This particle is found in the nucleus and adds mass to the nucleus, but changing its number does not change what the element is. This particle is the A. proton. B. photon. C. neutron. D. electron.

Projectile motion is an example of what kind of motion

What can change scientific knowledge?