A (n) _can be turned on and off

circuit

battery

electromagnet

conductor

The diameter of the Moon is 3480 km. What is the surface area of the Moon?

So, like my previous question, how do you solve for 4/5 - 1/2?

Of the two primary components of the interstellar medium, dust and gas, the interstellar gas does not obscure background light passing through to any great extent.

A train is traveling at 30.0 m/s relative to the ground in still air. The frequency of the note emitted by the train whistle is 262 Hz. The speed of sound in air should be taken as 344 m/s.

A paleontologist measures the ratio of carbon-14 to carbon-12 in a fossil skull found at a site. What technique is he using and for what purpose? a. using alpha emission to determine the structure of the skull b.

The bulk of peoples dreams occurs during what following state?

1. Which of the following lists minerals in order of hardness from lowest to highest on the Mohs hardness scale? A. Gypsum, apatite, topaz, feldspar, corundum B. Fingernail, penny, glass, topaz, diamond C.

The mass of a subway car and passengers is 45,500 kg. If it's acceleration as it leaves a station is 0.6 m/s2, what is the net force (in N) acting on it?

Which of the following determine an object's velocity? A. speed and direction B. direction and acceleration C. speed and mass D. speed, direction, and acceleration

The following statements regarding the exhaust gas recirculation (EGR) valve are all correct except: Low restriction exhaust systems will have no effect on EGR system operation. B.