Jonny tries to ride his bike a little longer each time. Which principle of fitness is he following? Individuality
Reversibility
Progression
Specificity

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

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