An electromagnetic wave traveling in a
vacuum has a wavelength of
6.6 X 10-11 m. Calculate the
frequency of this wave.
The speed of light in a vacuum is c.
a) 4.6Hz
b) 2. 2Hz
c) 4.6 x 1018 Hz
d) 2. 2 x 10-19Hz

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

Which of the following statement is false ? a. batteries should never be stored on metal trays or outside in the elements)b, battery acid cannot be neutralized)c. do not stack batteries on top of each other)d. never put a damaged battery in a dumpster. i