The first and second coils have the same length, and the third and fourth coils have the same length. they differ only in the cross-sectional area. according to theory, what should be the ratio of the resistance of the second coil to the first and the fourth coil to the third? calculate these ratios for your experimental results and compare the agreement with the expected ratio.

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?