Emily created a table to describe the weather conditions in her area on a specific day. What do the labels A and B in the table represent? A B
5 mm

30% 25 °C

Sunny

A is air pressure, and B is air temperature.
A is humidity, and B precipitation.
A is precipitation, and B is air temperature.
A is wind speed, and B is humidity.

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

What happens to an isotope during radioactive decay?

Sally turns on her cellular telephone to speak to her friend who is located thousands of miles away. which of the following best describes how such a telephone is able to transmit and receive information? a. the cellular telephone transmits, receives, and encodes information using only sound waves. b. the cellular telephone transmits, receives, and encodes information using only electromagnetic waves. c. the cellular telephone transmits information by electromagnetic waves to a receiver which then encodes them and produces sound. d. the cellular telephone transmits information by sound waves to a receiver which then encodes them and produces electromagnetic waves.