Just write a summary don't do the little details and don't explain everythinh
Answer:
d = 1.82 10⁻⁶ m = 1.82 μm
Explanation:
The diffraction phenomenon is explained by a similar equation Young's double slit equation
d sin θ = n λ
Where d is the spacing between the bars, θ is the angled diffraction, n in an integer representing the order of diffraction and λ is the wavelength of light
Let's calculate
d = n λ / sin θ
d = 1 470 10⁻⁹ /sin 15
d = 1.82 10⁻⁶ m = 1.82 μm
The specific heat capacity of the block is 
Explanation:
As the block is placed into the water, heat energy is transferred from the water (which is at higher temperature) to the block (which is at lower temperature), until the block and the water are in thermal equilibrium (= same temperature).
Therefore, we can write:
Where
is the heat energy released by the water, where
is the mass of the water
is the water heat specific capacity
is the initial temperature of the water
is the temperature at equilibrium
Substituting,
Now we can write the heat energy absorbed by the block as
where
is the mass of the block
is the specific heat capacity of the block
is the initial temperature of the block
And solving for ,
Learn more about specific heat capacity:
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The total amount of energy remains constant in an isolated system. It implies that energy can neither be created nor destroyed, but can be change from one form to another.
Physical change
Because it's changed by heat
