Name the four fundamental forces of nature, the forces front which all others are derived

The rubbing of one obejct or surface aganist another

What best describes frequency

How are electric current and a circuit related?

Two violin strings are tuned to the same frequency, 277 Hz. The tension in one string is then decreased by 1.92 percent. What will be the beat frequency heard when the two strings are played together?

A 20 μF capacitor initially charged to 30 μC is discharged through a 1.5 kΩ resistor. Part A How long does it take to reduce the capacitor's charge to 10 μC? Express your answer with the appropriate units.

What is the stopping distance at night for a passenger vehicle traveling at 50 mph?

How does mass affect weight

Communicable diseases can be prevented by:

If a photon has a frequency of 5.20 * 1014 hertz, what is the energy of the photon? Given: Planck's constant is 6.63 * 10-34 joule·seconds.

Water flowing from a waterfall before it hits the pond below?