Which component is found only in electric generators and not in electric motors?

a commutator

brushes

an armature

slip rings

These are example of foot and leg protection

A hollow metal ball hangs on a long massless string. The device is driven by a small side-to-side oscillator with a constant very small amplitude and an adjustable frequency. The driver begins to oscillate at a very low frequency.

Which of the following shows a measurement of acceleration? a. 5 m/s b. 5 m/s² c. 5 m/s north d. 5 m/s² north

Lightning bolts can carry currents up to approximately 20 kA. We can model such a current as the equivalent of a very long, straight wire. You may want to review (Pages 926 - 929).

In the formula Q = m * c * ΔT, which symbol represents specific heat? m c ΔT Q

Describe one example of competiton of tropical dry forest

What is the center of a tornado called A. the eye B. The center C. The middle road D. The vortex

Is it legal in Florida for a math teacher forces the kids to do push ups?

Acceleration is best defined as the rate of change of blank of an object

Zirconium has an atomic number of 40. How many neutrons are there in an isotope of zirconium-92?