Ryder writes a summary of a lesson about heat energy. Which statement should Ryder include in his summary? Choices:

A. Objects that give off heat always give off light energy.

B. An object’s temperature is not affected by heat transfer.

C. Heat always moves from where it is cooler to where it is warmer.

D. Heat always moves from where it is warmer to where it is cooler.

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.

The particle p starts from rest at point a at time t = 0 and changes its speed thereafter at a constant rate of 2.8g as it follows the horizontal path shown. determine the magnitude and direction of its total acceleration (a) just before point b, (b) just after point b, and (c) as it passes point c. state your directions relative to the x-axis shown (ccw positive) and choose the angle with the smallest magnitude.

The process of a material going through a change of state from a gas to a liquid