An 18,000-watt radio station transmits at 680 khz. calculate the energy of a single photon at the transmitted frequency. 1.2 x 10^-29 j/photon 4.5 x 10^-31 j/photon 4.5 x 10^-28 j/photon

What is the final velocity of the initial velocity of 25 and -50?

Slab pull” is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere true or false

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive