Explain why total internal reflection has make communication much faster through the use of fibre optic cables.

Explain how plate tectonics have changed earth’s surface over time. include the role of plate tectonics in the creation of landforms.

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

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