the answer is d they are essential to all ecosystems
Answer:
Explanation:
Energy E is conserved:

If v₀ = 22m/s, h₀=0m and h₁=25m:

Solving for v₁:

There is no real solution, because the stone never reaches 25m.
Answer:
It would be a physical change because you aren't changing to chemical properties of the glass, just the shape.
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Answer:
The wavelength of the light is 562.5 nm
Solution:
As per the question:
Order, n = 1
Slit separation, d = 
Distance from the bright fringe, y = 0.18 m
Distance between the screen and the grating, D = 0.8 m
Now,
We know from the eqn for diffraction:

n = 1
(1)
Also,
For very small angle,
:
≈ 
Using the above value in eqn (1):
