Beth made the chart shown.

a 2-column table with 1 row. the first column labeled x has entries wall clock, t v remote control, portable music player. the second column labeled y has entries refrigerator, table lamp, hair dryer.
which headings best complete the chart?

x: use dc
y: use ac

x: use ac
y: use dc

x: powered by current
y: powered by magnetism

x: powered by magnetism
y: powered by current

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.