If an ice cube melts at 0°c but water freezes at 0°c what is the difference between melting and freezing in terms of energy involved with phase changes and be particles of substances during the phase changes?

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction