Answer:
1. 214.38hz
2. higher than before.
Explanation:
1. the lowest frequency f of the sound wave produced
f = v/2L
l = 80cm = 0.8m
v = 343 metre per second, this is the sound speed of air
f = 343/2*0.8
the lowest frequency = 214.38hz
2. Since there is ahle n the pipe, this would shorten the length of air column that is able to oscillate in this pipe. we use the same formula as we used in question 1 here.
Vf ∝1/L
so we conclude that, c. it is higher than before
I just need the points
Explanation:
But just pick any and say something like "it stans out to me most/more" or "it sounds/looks more intristing to me"
Nuclear energy that what I think it is
A hypothesis is a proposed explanation made on the basis of limited information while a theory is a series of ideas intended to explain something.
Answer:
3 order dark fringe
Explanation:
y = Distance from central bright fringe = 204 mm
λ = Wavelength = 400 nm
L = Distance between screen and source = 1 m
d = Slit distance = 6 μm
Order of fringe is 3
So, it is a Dark order fringe