Which of the following values represents an index of refraction of an actual material?

A. 1 / 4

B. 5 / 4

C. 0

D. 1 / 2

Explain why dogs pant during hot summer days using the concept of evaporation?

Is this true or false: a scientific fact is something that is absolute and unchanging?

How many types of rocks are there

Is nitrogen a conpound

A beam of electrons is accelerated through a potential difference of 10 kv before entering a velocity selector. if the b-field of the velocity selector is perpendicular to the velocity and has a value of 0.

When a siren is approaching you, how does the wavelength of the waves reaching you compare to the actual wavelength that the siren emits?

In a harbor, you can see sea waves traveling around the edges of small stationary boats. Why does this happen?

Correct unit of speed

Technician A says that for best results, loosen the fastener immediately after spraying it with penetrating oil. Technician B says that rusted fasteners may be loosened by tapping with a hammer. Which technician is correct? a. technician A only b.

A roller coaster track is 3,000 meters long. It takes 100 seconds to travel once around the roller coaster. Is the velocity constant throughout the trip? Explain.