Vesta, a minor planet in the asteriod belt between mars and jupiter, has a mean radius of 525 km and mass of 2.59 x 10^20 kg. the dawn spacecraft (m = 1240 kg) orbited vesta in 2011 & 2012.
find the local acceleration due to gravity at the mean surface of vesta. what is the fractional change if instead you are at the top of the highest point on the surface, an additional 22 km from the center of gravity. assume all of vesta's mass is concentrated at its center of gravity.

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.