Two blocks connected by a rope of negligible mass are being dragged by a force at a 26° angle above horizontal (see figure below). suppose f = 89.0 n, m1 = 14.0 kg, m2 = 20.0 kg, and the coefficient of kinetic friction between each block and the surface is 0.200.

Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?