The 2000-kg cab of a freight elevator is rated to carry a maximum load of 1200 kg, but a careless worker fills the cab with freight that has a combined inertia of 1400 kg. the worker then raises the cab 3.1 m at a steady 2.0 m> s. you notice an unfamiliar whine and come over to investigate. as supervisor, you know that the motor has a 10% tolerance in its rated power output, and you must decide whether there’s going to be trouble.

c. rb

explanation:

the atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons.

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.