When heat is added to boiling water, its temperature
A) increases.
B) decreases.
C) remains unchanged.
D) none of the above
Answer: C
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Which of the following is not true about potential energy?
a. Potential energy is stored energy. c. Potential energy is a scalar quantity. b. Potential energy is related to position. d. Potential energy has direction.
Kinetic energy is conserved in elastic collisions
Indicate whether the statement is true or false
About 1 ?s after the Big Bang, the temperature of the universe was about 1013 K. What energy (in eV) does this correspond to?
A) 1 neV B) 1 keV C) 1 MeV D) 1 GeV E) 1 TeV
The geometry of an ellipse is described by two numbers: the ____ which is half the longest diameter of the ellipse and the ____ which tells us the shape of the ellipse
a. radius, eccentricity b. radius, deferent c. semi-major axis, deferent d. semi-major axis, epicycle e. semi-major axis, eccentricity