What benefit is gained by the addition of the iron core in an electromagnet

If two rocks with masses of 1 and 10 kilograms. What is the relation between their inertias Between their masses Between their weights on Earth?

If you adjusted the frequency to be lower than the resonant frequency, would the voltage have been leading ahead of or lagging behind the current? Explain

What is a form of oxygen that has three oxygen molecule instead of the usual two?

Which effects result from the influence of media and technology on children

What is the electric force between a glass ball that has + 4 * 10-6 C of charge and a rubber ball that has - 6 * 10-6 C of charge when they are separated by a distance of 6 cm? The value of the Coulomb constant is 8.98755 * 109 N · m2 / C 2.

5. Why should the electrons be placed separate from each other (why not together) ?

A battery high rate discharge (load capacity) test is being performed on a 12 volt battery. Technician A says that a good battery should have a voltage reading of higher than 9.6 volts while under load at the end of the 15-second test.

The number of significant digits in the mass of a body measuring 4200.0 kg is 2.

Two forces of intensities 3 N and 4 N act simultaneously on a body. If these forces have the same direction and sense, what is the intensity of the resulting force?

Ch 31 HW Problem 31.63 10 of 15 Constants In an L-R-C series circuit, the source has a voltage amplitude of 116 V, R = 77.0 Ω, and the reactance of the capacitor is 473 Ω. The voltage amplitude across the capacitor is 364 V.