Huan made a chart to study for an exam about radio waves. A 2-column table with 1 row. Column 1 is labeled X with entries Changes the frequency of a wave; Is used by cell phones to transmit data. Column 2 is labeled Y with entries Changes the height of a wave; Is used by television stations for pictures.

Which headings best complete the chart?

X: Phase
Y: Pulse
X: Pulse
Y: Phase
X: AM
Y: FM
X: FM
Y: AM

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid