When two point charges of magnitude q1 and q2
are separated by a distance, r, the magnitude of
the electrostatic force between them is f. what
would be the magnitude of the electrostatic force
between point charges 2q1 and 4q2 when
separated by a distance of 2r?
(1) f (3) 16f
(2) 2f (4) 4f

Which describes increasing the efficiency of energy resource

We will use a video to study faraday’s law of electromagnetic induction by analyzing the induction that occurs due a coil of copper wire sliding along an air track that passes through an external magnetic field. specifically, we will: examine some of the main principles behind faraday’s law. apply lenz’s law to determine the direction of the induced emf. take measurements of the induced emf from the voltmeter as the coil passes into and out of the external magnetic field. use the horizontal scale provided to determine the speed of the coil. calculate the magnetic field induced in the coil as it passes into and out of the external magnetic field.

Calculate the linear momentum of a pickup truck that has a mass of 1000kg, and is traveling eastward at 20 m/s