Which type of wave does not require a medium to travel through?
a.
wave created by x-rays as they create an image of a bone
b.
wave created by plucking the strings of a guitar
c.
wave created by dropping a pebble in water
d.
wave created by squeezing and releasing a spring

To protect all four receptacles on a branch circuit that surrounds a swimming pool, you would install which of the following configurations? a. gfci feed-through receptacle at the end of the load's circuit b. gfci-terminated receptacle at the beginning of the load's circuit c. gfci feed-through receptacle at the beginning of the load's circuit and the other receptacles connected to the load side of that receptacle d. gfci-terminated receptacle at each end of the load's circuit

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 air that we breath is made mostly of which gaseous molecule