Answer:
Blue light
Explanation:
y=Lwm/d
where:
y is the distance between the finges
w is the wavelength is light (I dont have a symbol for lambda)
m is the fringe order (the central bright fringe is the zeroth- order, the next on either side is the + or - first order, et cet)
d is the distace between the slits
So to reduce y, the spacing between the fringes, you could move your screen closer to the slits, use slits that are spaced farther apart, or use a shorter wavelength of light (shift toward the blue)
Answer:
Oxygen
Explanation:
Oxygen is the cause to flamibility, if there was no oxygen in the atmosphere around, you would not be able to produce a burning reaction.
The correct answer is:
false
The explanation:
It is not called a control group as the control group is a group of subjects closely resembling the treatment group in many demographic variables but not receiving the active medication or factor under study and thereby serving as a comparison group when treatment results are evaluated.
Answer:
31.8 × 10⁻⁴ J = 3.18 mJ
Explanation:
We know the intensity I of a wave is I = P/A where P = power and A = area = 0.500 m²
The intensity of an electromagnetic wave is also equal to I = E₀²/μ₀c
where E₀ = maximum electric field strength = √2E where E = rms value of electric field = 0.0200 N/C, μ₀ = 4π × 10⁻⁷ H/m ,c = 3 × 10⁸ m/s
P/A = E₀²/μ₀c = 2E²/μ₀c
P = 2E²A/μ₀c = 2 × (0.02 N/C)² × 0.5 m²/(4π × 10⁻⁷ H/m × 3 × 10⁸ m/s)
= 1.06 × 10⁻⁴ W = 0.106 mW
Since P = E/t where E = Energy and t = time
E = Pt with t = 30 s
E = 1.06 × 10⁻⁴ W × 30 s = 31.8 × 10⁻⁴ J = 3.18 mJ
So the wave carries 3.18 mJ of energy through the window in 30 s
Answer:
Short circuit, closed circuit, open circuit