Suppose an experiment measures a mass, heats it over a flame without changing its state, measures it again, and finds the mass to be different. which statement best describes the kind of change that could have taken place a. physical change because the substance became more denseb. chemical change because mass was lost, most likely as a gasc. chemical change because the chemical property of mass changedd. physical change because the mass melted going from a solid to a liquid
Answers: 1
Physics, 21.06.2019 15:50, OoofIamdead
Aneutron and a proton combine to form a nucleus. why does the mass of the nucleus differ from the sum of the masses of the individual nucleons?
Answers: 1
Physics, 22.06.2019 15:00, ttorres013
Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants
Answers: 2
Physics, 23.06.2019 01:00, rachelvasky9
How much work would it take to move a coulomb charge across a 4 volt potential difference?
Answers: 2
Physics, 23.06.2019 01:00, Shelleycarousel
Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.
Answers: 3
Suppose an experiment measures a mass, heats it over a flame without changing its state, measures it...
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