Answer:
E) 314 nm
Explanation:
The relationship between speed, frequency and wavelength for an electromagnetic wave is given as:
V = fλ
Where;
V is the speed of the wave
f is the frequency of the wave
λ is the wavelength.
Making λ the subject of the equation,
λ = V/ f
λ = 2.05 x 10^8 / 6.53 x 10^14
= 3.14 x 10^-7 m
= 314 x 10^-9 m
= 314 nm
<span>If
you notice that two waves combine and a part of the resulting wave has
less light intensity than either of the individual waves, you're
observing destructive interference. </span><span>Destructive interference happens when the two waves that combine have amplitudes with opposite signs,which results in subtraction- combined wave with a lower amplitude.</span>
Using the impulse-momentum theorem and taking this down as positive, we will get:
FΔt = Δp
F = Δp / Δt
= m(v - v₀) / t
= 0.056kg [13m/s - (- 20m/s) / 0.00125s
= 1478.4 N when properly rounded off is the answer we are looking for in this problem.
Answer;
-A model
Explanation;
-A mathematical model is an abstract model that uses mathematical language to describe the behavior of a system. A Mathematical Model tries to copy how a real world thing works using equations.
-Usually a mathematical model describes a system by a set of variables and a set of equations that establish relationships between the variables. Variables may be of many types; real or integer numbers, for example.
-The Area A of a circle with radius r is given by the formula A = πr2. In this formula π ≈ 3.1416... is a number which is a constant, and A and r are variables or unknowns. A is called the subject of the formula.
Answer:
The (minimum) thickness of the oil slick is 325 nm.
Explanation:
Let the (minimum) thickness of the oil slick =
Therefore:
2 = (+)*λ/ (1)
similarly,
2=()*λ/ (2)
Thus, equation 1 = equation 2
(+*λ = (*λ
Where:
λ
λ
Therefore:
=650/390=5/3
This shows that,
=2
=1
Thus, using equation 2
=