The answer is B. The nuclei of elements.
How heavy is the rock? comment and i will tell you answer
Answer:
0.1 = 4.42v
1.0 =0.44v
60 = 7.4 × 10^-3 V
Explanation:
Apply the formula of:
Emf = (No of turns × magnetic flux)÷(the given time)
Where your magnetic flux = (0.50 × cross sectional area(pi × 0.075^2))
Answer:
a)λ = 6.133 10⁻⁷ m
= 613.3 nm, b) d = 1.60 10⁻⁶ m
, c) Δd = 0.24 10⁻⁶ m
Explanation:
The expression that describes the interference phenomenon for the double slit is
d sin θ = m λ m = ±1, ±2,…
a) Let's use the data to find the separation of the slits (d)
d = m λ / sin θ
d = 4 460 10⁻⁹ / sin 90
d = 1.84 10⁻⁶ m
Now we can calculate the minimum wavelength for the third orcen (m = 3), the maximum angle must be 90 °
λ = d sin θ / m
λ = 1.84 10⁻⁶ sin 90 / 3
λ = 6.133 10⁻⁷ m
This is the last visible wavelength in this interference order, that is, we see the light with a shorter length than the calculated
b) To eliminate all the light of the fourth order (m = 4) let's use the minimum wavelength of visible range ( λ = 400 nm) from a 90 ° angle
d = m λ / sin θ
d = 4 400 10⁻⁹ / sin 90
d = 1.60 10⁻⁶ m
If we reduce the slit to this value, the spectrum for the fourth order can be used.
c) It is change of separation is
Δd = d₂ - d₁
Δd = (1.84 - 1.60) 10⁻⁶ m
Δd = 0.24 10⁻⁶ m
The efficiency of a heat engine is given by the expression 
The efficiency of a heat engine is the ratio of the work done by the engine to the heat given as the input to the engine.
The heat engine absorbs Q h from the hot reservoir , performs a work <em>W</em> on the absorbed heat and rejects Qc to the cold reservoir.
Therefore, the work done is given by,
Thus the efficiency is given by,
