24.7 Skills for applying the wave model of light Babinet’s principle Babinet's principle states that the diffraction pattern of complementary objects is the same. For example, a rectangular slit produces the same diffraction pattern on a screen as a rectangular obstacle of the same size as the slit, provided that the incident beam is wider than the slit or the obstacle. Determine the width of a hair that, when irradiated with laser light of wavelength 630 nm, produces a diffraction pattern on a screen with the first minimum 2.5 cm on the side of the central maximum. The screen is 2.0 m from the hair.
24.7 Skills for applying the wave model of light Babinet’s principle Babinet's principle states that the diffraction pattern of complementary objects is the same. For example, a rectangular slit produces the same diffraction pattern on a screen as a rectangular obstacle of the same size as the slit, provided that the incident beam is wider than the slit or the obstacle. Determine the width of a hair that, when irradiated with laser light of wavelength 630 nm, produces a diffraction pattern on a screen with the first minimum 2.5 cm on the side of the central maximum. The screen is 2.0 m from the hair.
Babinet’s principle Babinet's principle states that the diffraction pattern of complementary objects is the same. For example, a rectangular slit produces the same diffraction pattern on a screen as a rectangular obstacle of the same size as the slit, provided that the incident beam is wider than the slit or the obstacle. Determine the width of a hair that, when irradiated with laser light of wavelength 630 nm, produces a diffraction pattern on a screen with the first minimum 2.5 cm on the side of the central maximum. The screen is 2.0 m from the hair.
The figure gives the acceleration a versus time t for a particle moving along an x axis. The a-axis scale is set by as = 12.0 m/s². At t = -2.0
s, the particle's velocity is 11.0 m/s. What is its velocity at t = 6.0 s?
a (m/s²)
as
-2
0
2
t(s)
4
Two solid cylindrical rods AB and BC are welded together at B and loaded as shown. Knowing that the average normal stress must not
exceed 150 MPa in either rod, determine the smallest allowable values of the diameters d₁ and d2. Take P= 85 kN.
P
125 kN
B
125 kN
C
0.9 m
1.2 m
The smallest allowable value of the diameter d₁ is
The smallest allowable value of the diameter d₂ is
mm.
mm.
Westros, from Game of Thrones, has an area of approximately 6.73⋅106 miles26.73⋅106miles2. Convert the area of Westros to km2 where 1.00 mile = 1.609 km.
Chapter 24 Solutions
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