An electric motor must have which of the following in order to work?

galvanometer, power source, secondary coil, or primary coil

Would you hear an echo if you shouted in your bedroom? Explain your answer.

Which theory is closest to the cognitive arousal theory A) cannon-bard theory B) Lazarus cognitive-meditational theory C) common sense theory D) james-lange theory

The outer layer of the Earth is called the lithosphere or crust?

Which of the following accurately describes junction diodes? A. The negative terminal of the source of voltage is connected to the N-type material within a reverse-biased setup. B.

Which situation is the BEST example of inertia?

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.