On a pulley, the strings help support the weight of the object being lifted. What happens to the force as more support strands are added to the pulley? A. the force increases and the work decreases

B. the force decreases and the work is the same

C. the force decreases and the work decreases

D. the force increases and the work increases

(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

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

What are the north and south poles of a solenoid change with?