Generators use a magnetic field of which of the following to produce an electric current?

temporary magnet

magnetic properties

magnetic domain

permanent magnet

Which nonmetal makes up diamond, graphite, and the majority of coal? A - Oxygen B - Sodium C - Magnesium D - Carbon

An electromagnetic wave traveling in a vacuum has a frequency of 5 x 10 Hz, Calculate the wavelength of this wave. The speed of light in a vacuum is c. a) 6,000,000m b) om c) 0.06m d) 0.6m

Inside a star the force of gravity is balanced by

A construction worker uses an electrical device to attract fallen nails and sharp objects from a construction site. What is causing the attraction of the metal objects? A) An electrical wave oscillating perpendicular to the electrical device.

What is a free body diagram? A). A diagram of an object that is free to roll. B). A diagram showing all the forces acting on an object but not it's surroundings. C). A drawing of an object in free fall. D).

Under what condition (s) will an object be in equilibrium? Notice that equilibrium in physics has a broader definition. (A) Only if it is moving with constant velocity. (B) Only if it is at rest.

If a pressure gauge measure an increase in 3*10^ (5) Pa on an area of 0.7 m^2, calculate the increase in the force applied to the area?

Which of the following is an example of potential rather than kinetic energy? a. water rushing over Niagara Falls b. a molecule of glucose c. a crawling beetle foraging for food d. light flashes emitted by a firefly

If a force of 15 newtons [N] is applied to a surface and the pressure is measured as 4,000 pascals [Pa], what is the area of the surface in units of square milimeters [mm2 ]?

An engineer has the task of producing an aluminum alloy with a density of 3.0 grams per cubic centimeter. She comes up with the perfect alloy and saves a sample of it. Which mass and volume measurements correspond to this sample? 7 g and 2.