The particles in a nucleus are held together
primarily by the
(1) strong force (3) electrostatic force
(2) gravitational force (4) magnetic force

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c

What happens to an isotope during radioactive decay?