Answer asa rocks that are melted by heat and then cooled are classified as: a) igneous b) sedimentary c) metamorphic

What do radio waves and microwaves have in common? both are at the side of the spectrum that has the shortest wavelengths. both are at the side of the spectrum that has the lowest radiant energy. both are at the side of the spectrum that has the lowest frequency. both are found next to visible light on the electromagnetic spectrum.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?