How can an electron be ejected from a nucleus in beta decay if it wasn’t in the nucleus to begin with? Group of answer choices A proton in the nucleus turns into a neutron, electron, and a neutrino. The electron doesn’t come from the nucleus—it comes from an orbit circling the nucleus. none of the above A neutron in the nucleus turns into a proton, electron, and a neutrino.

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

A2-kg bowling ball is 2.5 meters off the ground on a post when it falls. just before it reaches the ground, it is traveling 7 m/s. assuming that there is no air resistance, which statement is true?

Atwo-stage air compressor operates at steady state, compression 10m^3/min of air from 100 kpa and 300k to 1200 kpa. an intercooler between the two stages cools the air to 300k at a constant pressure of 350 kpa. the compression processes are isentropic. a) calculate the power required to run the compressor, in kw b) compare the result to the power required for isentropic compression from the same inlet state to the same final pressure.