PLEASE ANSWER QUICK The string on a piano that produces an A sharp vibrates with a frequency of 235 Hz.
If the sound waves produced by this string have a wavelength in air of 1.49 meters,
what is the speed of sound in air?

An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)