Someone made a copy of an analog wave and a digital wave. Compare the copies with the original waves. Then, explain which wave is more reliable way to encode and transmit information.

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

Write down two additional questions about earth's magnetic field that will make your presentation more informative.