Ultrasound refers to sound waves that have frequencies that are higher than humans can hear. information from ultrasound waves that are reflected off objects can be used to make images. dr. nolas is using an ultrasound machine to make images of objects that are in a liquid. the machine produces a wave that moves through the liquid at a speed of 1,500 m/s and has a frequency of 25,000 hz. what is the wavelength of the wave moving through the liquid

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.

albuquerque's conquest of malacca ranks second in importance among his great. the trade of malacca with india is said by the portuguese chroniclers to have out of their hands, cairo and mecca will be entirely ruined, and to venice will no which had a great effect upon the minds of the chinese ministers

it   would try making the   president who would the economy get out of depression picked

the border between arizona and new mexico is a thin, black line; this indicates a state boundary.

its correct: it's a thin line, and it's a state boundary, correct