Answer:
θ₄ = 37.2º
Explanation:
For this exercise it must be solved in two parts, the first part we look for the critical angle, for this we use the law of refraction with the angle in the middle of transmission of tea = 90º
n₁ sin θ₁= n₂ sin 90
θ₁ = sin⁻¹
θ₁ = sin⁻¹ (1.33 / 1.43)
θ₁ = 68.4º
They indicate that the angle of incidence is half of the critical angle
θ₃ = 68.4 / 2 = 34.2º
Let's use the law of refraction again
n₁ sin θ₃ = n₂ sin θ₄
sin θ₄ = sin θ₃
sin θ₄ = sin 34.2
θ₄ = sin⁻¹ 0.604345
θ₄ = 37.2º
Answer:
Option A
A blank is measured to remove the signal caused by the cuvette walls and solvent
Explanation:
Spectrophotometer is an instrument for measuring the absorbance or transmittance of the liquid in terms of wave function. The blank solutions is used for calibration of spectrophotometer while the cuvette is the container where the liquid sample is taken in the spectrophotometer. The absorbance of blank solution is known as zero hence the name blank solution. Normally, a blank is is measured to eliminate signal caused by cuvette walls on solvent and results into the formation of solute peaks in the spectra.
They are speed and direction.
Answer:
Explanation:
Impulse results in change of momentum
FΔt = mΔv
F = 0.030(50.0 - 0) / 0.010 = 150 N
The vertical portion of that force adds to his weight on the ice
Fmax = 60.00(9.81) + 150sin30 = 663.6 N
As this is above the ice strength, He takes a cold dip.
Answer:
Explanation:
Given data
Diameter D=0.50 mm
Wavelength λ=500 nm
Length L=2.0 m
To find
Width w
Solution
Circular aperture of diameter D will have bright central maximum of diameter:
w=(2.44λL)/D