3 years ago

________________ is the tendency of an object to resist a change in its motion.

Physics

1 answer:

Sliva [168]3 years ago

7 0

Inertia is the tendency of an object to resist a change in its motion.

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Light travels 875 km in material “x” in 5.00 ms. Calculate the speed of light in the material and the material’s index of refrac

tatiyna

1. Speed of light in the material: $1.75\cdot 10^8 m/s$

The speed of light in a material is defined as follows:

$v=\frac{d}{t}$

where

d is the distance travelled by light in the material

t is the time taken

In this problem, we have

$d=875 km = 8.75\cdot 10^5 m$ is the distance travelled in the material

$t=5.00 ms=0.005 s$ is the time taken

So, the speed of light in the material is

$v=\frac{8.75\cdot 10^5 m}{0.005 s}=1.75\cdot 10^8 m/s$

2. Index of refraction: 1.71

The index of refraction of a material is defined as:

$n=\frac{c}{v}$

where

$c=3.00\cdot 10^8 m/s$ is the speed of light in a vacuum

v is the speed of light in the material

For this material, we have

$v=1.75\cdot 10^8 m/s$

So, the index of refraction is

$n=\frac{3.00\cdot 10^8 m/s}{1.75\cdot 10^8 m/s}=1.71$

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