The speed of light in a certain medium is 61.2% of the speed of light in vacuum. What is the index of refraction of the medium?

In which of the following materials is the velocity of light greatest? A. Air B. Water C. Fused quartz D. Crown glass

State laws of electromagnetic induction

The speed of a car traveling in a straight line is reduced from 45 to 30 mph in a distance of 264 feet. Find the distance in which the car can be brought to rest from 30 mph, assuming the same constant acceleration.

Which scenario represents the weakest force? (Assume particles in all scenarios are the same distance apart.) Protons and neutrons are held together inside the nucleus. Two particles are attracted to one another by static electricity.

How can two polarizing filters be used to show that light has some properties of a wave

A sound from a source has an intensity of 270 db when it is 1 m from the source. what is the intensity of the sound when it is 3 m from the source?

What experimental term is it when a ruler is dropped to the floor?

Where is most of the energy from incoming waves focused? A. spit B. headland C. underwater D. barrier beach

Exoplanets (planets outside our solar system) are an active area of modern research. Suppose you read an article stating that there is a newly discovered planetary system with three planets.

A car with a mass 1200 kg accelerates at 1.89 m/s2. What is the total force exerted by the car on the road (answer in N to two decimal places) ?