A 2kg block is on frictionless incline theta is 20° and acts on by aforce 11N and angle alpha is 35° to the incline A)find the acceleration of the block B) find the force exerted by the incline on the block? #please I need

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Which one of the following research methods can show cause and effect

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