Which of these is an example of mechanical energy transforming into heat energy?

A.
burning gasoline

B.
sunbathing by the pool

C.
lightning creating thunder

D.
rubbing your hands together

What is the chemical formula of magnesium bromide? a. mgbr2 b. mgbr c. mg2br2 d. mg2br

What are the trends and exceptions to the trends in electron affinity?

According to the passage, which of these is true about gray water systems? a) gray water systems use plants that require less water. eliminate b) gray water systems require the use of less fossil fuels. c) gray water systems reduce the amount of fresh water used. d) gray water systems reduce the amount water used by shower heads.