Suppose a transformer has 50 windings on its primary and 300 windings on its secondary. If the input voltage (i. e., on the primary) is 40 V, what is the voltage at the output (i. e., on the secondary)

What would the difference of spectral lines emitted by hydrogen gas in distant galaxies which is normally found at a wavelength of 21 cm on earth, be observed at 21.1 centimeters?

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.