What is the kinetic theory of matter? How does it relate to the motion of molecules?

What is the function of the commutator in a DC motor? A. to spin the magnet B. to change direct current into alternating current C. to change alternating current into direct current D. to spin the wire coil

Two-out-of-tune flutes play the same note. One produces a tone that has a frequency of 250 Hz, while the other produces 266 Hz. When a tuning fork is sounded together with the 250-Hz tone, a beat frequency of 9 Hz is produced.

The moon is slowly moving away from the earth, what will eventually happen to the gavitional force between the earth and the moon

A wheel is observed to rotate 5 complete revolutions in 25 seconds. What is its angular speed

An 80 - kg quarterback jumps straight up in the air right before throwing a 0.43-kg football horizontally at 15m/s. Sort the following quantities as known or unknown. a. Take the horizontal direction to be along the x axis. : b.

The net change in energy equals the energy transferred as work and as heat is called what

The law of conservation of energy states that momentum is conserved in a collision. true or false

When the driver steps on the accelerator, the drive wheels of the car push horizontally against the ground with a force of 4500 N.

What is the monument of a 1200 kg truck traveling at a speed of 25 m/s?

If a cheetah runs at 25 m/s, how long will it take a cheetah to run a 100 m dash?