As 390-g of hot milk cools in a mug, it transfers 30,000 j of heat to the environment.
how does the temperature of the milk change? (cmilk = 3.9 j/g°c)
a) it increases by 77°c.
b) it decreases by 77°c.
c) it increases by 20°c.
d) it decreases by 20°c.

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.