Answer:
Explanation:
Given:
- refractive index of the glass plate,
- thickness of the glass plate,
- wavelength of the source light,
<u>We know that the refractive index of a medium is given as:</u>
Hence the no. of wavelengths in the glass:
The first reason is that in the past humans didn't necessarily see the connections between the oceans and thus labelled them that way separating them into 5 oceans and the names stuck to this day.
Secondly, while all the oceans of the world constitute one large Ocean, people need some way to identify each part of it since it is easier to think when we have different categories instead of one large category.
Hope that helped!
Answer:
Constructive interference occurs
Explanation
This is because at the point they both occupy the same region of space at the same time, there is a superposition of the waves causing them to add up. Since their amplitudes are equal and positive, they are in phase. and thus there is increase the resultant amplitude..This increase in amplitude is due to constructive interference.
The heat required for the water to reach a temperature of 100 degrees C from 20 degrees C is calculated through the equation,
H = mcpdT
where m is the mass, cp is the specific heat and dT is the temperature difference. cp for water is 1 cal/g°C. Thus, the heat applied is,
H = m(1)(80) = 80m
This heat was applied for 5 minutes.
Now, recall that the heat needed to boil off the water is calculated by the equation,
H = m(hv)
where m is still mass and hv is the heat of vaporization which is equal to 540 cal/g. Thus, the heat required is,
H = 540m
We use ratio and proportional to get the time required.
80m / 5 minutes = 540 m / x minutes
The value of x from the equation is 33.75 minutes.