What mediums are best for light waves?

An electron moving in a wire collides again and again with atoms and travels an average distance between collisions that is called the mean free path.

Roger pushes a box on a 30° incline. If he applies a force of 60 newtons parallel to the incline and displaces the box 10 meters along the incline, how much work will he do on the box?

A man stands on his balcony, 130 feet above the ground. He looks at the ground, with his sight line forming an angle of 70° with the building, and sees a bus stop.

The velocity of sound on a particular day outside is 331 meters/second. What is the frequency of a tone if it has a wavelength of 0.6 meters?

Which quantity best captures the concept of resistance? A. the ratio of voltage to current B. the product of power and voltage C. the ratio of power to current D. the ratio of voltage to power E. the product of voltage and current

Which sequence shows electromagnetic waves arranged from shorter to longer wavelengths?. A. visible light, infrared radiation, microwaves, and ultraviolet rays. B. infrared radiation, Visible light, ultraviolet rays, microwaves. C.

Will the April 29th 2020 astroid be the end of humanity as we know it?

Which option identifies the two natural wind patterns that move air masses in the United States?

The pressure, p, of water (in pounds per square foot) at a depth of d feet below the surface is given by the formula p=15+15/33d. If a diver is 100 feet below surface, what is the pressure of the water on the diver? a. 15.0 pounds per square feet b.

Ndy has two samples of liquids. Sample A has a pH of 4, and sample B has a pH of 6. What can Andy conclude about these two samples? Sample A is, and sample B is. NextReset