According to the Bohr model for the hydrogen atom, the energy of the atom is not continuous but has certain discrete enery, each of which is related to a fixed circularof the electron around the nucleus. The farther the electron is from the nucleus, thethe energy of the system.

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

Choose a synonym for the underlined homonym (a word with two or more meanings). i did not expect the boat to rock so much. a. boulder c. astound b. sway d. shock

An object's buoyant force and weight mean the same thing.a. trueb. false