Objects moving withspeed in a circular path experience centripetal acceleration

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.