Frequency and speed = wavelength.
Answer:
a)
b)
Explanation:
a)
The width of the central bright in this diffraction pattern is given by:
when m is a natural number.
here:
- m is 1 (to find the central bright fringe)
- D is the distance from the slit to the screen
- a is the slit wide
- λ is the wavelength
So we have:
b)
Now, if we do m=2 we can find the distance to the second minima.

Now we need to subtract these distance, to get the width of the first bright fringe :
I hope it heps you!
Answer:
100 watt
Watt is a unit of power, for the light bulb its produces or consumes 100 watts of power
There is a ner force of 15 N allowing Levi and Clara to mobe the box.