Answer:
The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is 299792458 metres per second.
Entropy, in thermodynamics, is a measure of the degree of randomness or disorderliness of a system. It has units of energy per temperature. So, we calculate it by dividing the total heat in the system by the temperature. We do as follows:
Entropy = 437 J / 321 K = 1.36 J/K
Answer:
The refractive index of the material is 1.28.
Explanation:
It is given that,
Refractive index of medium 1, n₁ = 1.31
Critical angle,
At critical angle rays will reflects at 90 degrees. Using Snell's law as:
At critical angle,
So, the refractive index of the material is 1.28. Hence, this is the required solution.
Answer:
An object in motion will stay in motion until an outside force is acted upon it.An object at rest will stay at rest until an outside force acts upon it.
Explanation:
Answer:
A. Travel in one direction
Explanation:
light can be reflected and bent but light originally travels in one direction in straight lines