When a tuning fork vibrates over an open pipe and the air in the pipe st21 to vibrate, the vibrations in

the tube are caused by

A. resonance.

B. reinforcement.

C. harmonics.

D. beats.

Does a resistor resist current or voltage

True or False. Electromagnetic waves are classified as longitudinal waves.

An in-line skater traveling in a straight line goes from 3 m/s to 9 m/s in 3 s. What is the acceleration?

A train is moving at 35 m/s to the east. it speeds up to 42 m/s east over the course of 40 seconds. what was trains acceleration

Tommy was walking at a rate of 4 miles hour at noon and at 12:30 pm he was walking at a brisk rate of 6 miles hour. Two hours later Tommy was walking at a leisurely rate of 2 miles hour.

A model rocket is fired vertically from the ground with a constant acceleration of 45.3 m/s2 for 1.46 s at which time its fuel is exhausted. What is the maximum height (in m) reached by the rocket?

A crude approximation for the x component of velocity in an incompressible laminar boundary layer is a linear variation from u = 0 at the surface (y = 0) to the freestream velocity, U, at the boundary-layer edge (y = δ).

Why did dad leave mom?

Sal drew the electron dot diagram of an aluminum atom as shown. How should Sal correct his diagram? He should add five more dots so that the atom obeys the octet rule. He should add ten more dots so that all thirteen electrons are shown.

What uses electricity