What is the role of neutrons in an atom?
a. neutrons provide a negative charge to the atomic nucleus
b. neutrons provide a positive charge to the atomic nucleus
c. neutrons keep protons apart so they don't repel each other
d. neutrons neutralize electrons

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

What determines the amount of inertia an object has

The ozone hole appears in antarctica during