Physics, 25.03.2021 04:00, BreBreDoeCCx
Samples of different materials, A and B, have the same mass, but the sample
of A is higher in density. Which statement could explain why this is so?
A. The particles that make up material A have more mass than the
particles that make up material B.
B. The sample of material A has greater volume than the sample of
material B.
C. The particles that make up material B are more closely packed
together than the particles that make up material A.
D. The particles that make up material B have more mass than the
particles that make up material A.
Answers: 2
Physics, 22.06.2019 17:50, manou76
Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?
Answers: 1
Physics, 22.06.2019 18:30, aROSSconpollo
Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.
Answers: 1
Samples of different materials, A and B, have the same mass, but the sample
of A is higher in densi...
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