Aband director instructs students to play a pitch louder. how will the sound wave change when the band plays the same pitch louder?

the speed of the sound wave will increase.
the frequency of the sound wave will increase.
the wavelength of the sound wave will increase.
the amplitude of the sound wave will increase.

J. j. thomson’s experiment disproved the theory that an atom

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d