An electromagnet is ___

a. a permanent magnet

b. made with bar magnets

c. attracts all metal substances

d. only operating when the current is on

Question 1 Unsaved Sun 101 - Which two complementary forces keep the Sun from blowing itself up? Question 1 options: fusion and magnetism helium and hydrogen photons and magnetism fusion and gravity

Chegg A late passenger, sprinting at 8.00 m/s, is 30.0 m away from the rear end of a train when the train starts from rest with a constant acceleration of 1.00 m/s2.

What are basic physical quantities and it's measurement units? Make a chart.

what are the common elements that make up series and parallel circuits, and how are circuits diagrammed?

Earlier studies were more slanted toward a. the upper class. c. Caucasian males. b. teenagers in school. d. Caucasian females.

Since you've determined that the power supply is a 700W dual rail, what does that make the maximum output power?

A 2 m length of an aluminum pipe of 240 mm outer diameter and 10 mm wall thickness is used as a short column to carry a 640? centric axial load. Knowing that? = 73? P? and? = 0.

A python can detect thermal radiation from objects that differ in temperature from their environment as long as the received intensity of thermal radiation is greater than 0.60 W/m2. Your body emits a good deal of thermal radiation.

A planet has a mass of about 6.4 x 1023 kg, and its moon has a mass of about 9.6 x 1015 kg. if the magnitude of the gravitational force between the two bodies is 4.6 x 1015 n, how far apart are the planet and its moon? a. 9.4 x 106 c. 4.6 x 109 b. 2.

Is burning a nonrenewable natural gas a chemical change