Asmall loop of area a = 5.5 mm2 is inside a long solenoid that has n = 919 turns/cm and carries a sinusoidally varying current i of amplitude 3.08 a and angular frequency 226 rad/s. the central axis of the loop and solenoid coincide. what is the amplitude of the emf induced in the loop?

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

Which of the following is the main energy source for the sun? a. fission of hydrogen b. fusion of hydrogen c. fusion of helium d. fission of iron