<span>the ratio of the velocity of light in the medium over the velocity of light in a vacuum</span>
Answer:
The main physical characteristics of matter are mass, volume, weight, density, odor, and color. These are the characteristics that help us to see matter, feel matter, and taste matter.
Explanation:
Answer:
law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time.
Answer: When you speak into the can, your voice creates air vibrations that travel into the can, vibrate the bottom of the can, which in turn vibrates the string all the way over to the other can, in turn vibrating the other can's bottom, then the air again.
Explanation:
We use the formula, to calculate the average speed of the round trip,
Here, 
, is total distance covered by plane in total time, 
.
For the round trip,
.
Thus,
.
