Answer:
1.2
Explanation:
Index of refraction = actual thickness/virtual thickness
Actual thickness = 3cm, virtual thickness = 2.5cm
Index of refraction = 3/2.5 = 1.2
When bacteria in the soil takes nitrogen from the air it becomes nitrates it can finally move through the food chain in this form.
Answer:
a) ΔФ = 5.54 rad
, b) f = 140 Hz
Explanation:
a) This is a sound interference exercise, which is described by
Δr /λ = ΔФ / 2π
ΔФ = Δr 2π /λ
Let's find the path difference
Δr = r₂ -r₁
r₁ = 4m
r₂ = √ (x² + y²) = √(3² + 4²) = 5 m
Δr = 1 m
To find the wavelength we use the relation of the speed of sound
v = λ f
λ = v / f
λ = 340/300
λ = 1,133 m
We substitute
ΔФ = 2π 1 /1.133
ΔФ = 5.54 rad
b) to have a minimum intensity the phase difference must be π radians
λ = Δr 2π /Ф
λ = 1 2π /π
λ = 2m
We look for the frequency
v = λ f
f = v /λ
f = 340/2
f = 140 Hz
Answer:
for 8th one it is 33.4k joules and for ninth one i think 95degree C.
Explanation:
hope this helps
thank you.
Answer:
yes
Explanation:
The hypothesis is scientific because there is no solid evidence to draw out the theory. Therefore the idea of other intelligence on other planets is scientific until found unworthy or scientifically proven wrong enough. Hope this helps a little:)