Question:

PLEASE HELP! IF YOU ANSWER ALL PARTS TO MY QUESTION I WILL DO ANY 20 OF YOUR QUESTIONS AT ANY TIME!!! I WILL EVEN DO A TEST FOR YOU!

We all know the formula for work: W = FD. But what about t the work-energy theorem? This theorem involves kinetic energy, which of course is implied in the formula for work as well. (1) What is the work energy theorem? (2) Write the formula for the theorem. (3) Use the formula to answer the question: According to the work-energy theorem, between what two points does the roller coaster car do the most work? The roller coaster car has mass 20 kg.

Assume similar data for the motion of the blood in your aorta. estimate how many beats of the heart it will take the blood to get from your heart to your brain. (assume that the distance from your heart to your brain is 30 cm)

Search coils and credit cards. one practical way to measure magnetic field strength uses a small, closely wound coil called a search coil. the coil is initially held with its plane perpendicular to a magnetic field. the coil is then either quickly rotated a quarter-turn about a diameter or quickly pulled out of the field. (a) derive the equation relating the total charge q that flows through a search coil to the magnetic-field magnitude b. the search coil has n turns, each with area a, and the flux through the coil is decreased from its initial maximum value to zero in a time ∆t. the resistance of the coil is r, and the total charge is q = i∆t, where i is the average current induced by the change in flux. (b) in a credit card reader, the magnetic strip on the back of a credit card is rapidly “swiped” past a coil within the reader. explain, using the same ideas that underlie the operation of a search coil, how the reader can decode the information stored in the pattern of magnetization on the strip. (c) is it necessary that the credit card be “swiped” through the reader at exactly the right speed? why or why not?

In science and physics what is the standard unit of measure for speed?