What is the electrostatic force between and electron and a proton separated by 0.1 mm? 2.3 × 10^-20n, attractive.
2.3 × 10^-20n, repulsive.
2.3 × 10^-18n, attractive.
2.3 × 10^-18n, repulsive.
2.3 × 10^-16n, attractive.

Ahot-air balloonist, rising vertically with a constant speed of 5.00 m/s releases a sandbag at the instant the balloon is 40.0 m above the ground. after it is released, the sandbag encounters no appreciable air drag. compute the velocity of the sandbag at 0.250 s after its release.

Why does lightning travel from clouds to the ground?

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.