In a science museum, you may have seen a Foucault pendulum, which is used to demonstrate the rotation of the earth. In one museum's pendulum, the 110 kg bob swings from a 15.0-m-long cable with an amplitude of 5.0° Requried:
a. What is the period of this pendulum?
b. What is the bob's maximum speed?
c. What is the pendulum's maximum kinetic energy?
d. When the bob is at its maximum displacement, how much higher is it than when it is at its equilibrium position?

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.