A glass sheet measuring 10.0 cm × 25.0 cm is covered by a very thin opaque coating. In the middle of this sheet is a thin, straight scratch 0.00125 mm thick, as shown in Figure 26.45 . The sheet is totally immersed beneath the surface of a liquid having an index of refraction of 1.45. Monochromatic light strikes the sheet perpendicular to its surface and passes through the scratch. A screen is placed under the liquid a distance 30.0 cm away from the sheet and parallel to it. You observe that the first dark fringes on either side of the central bright fringe on this screen are 22.4 cm apart. What is the wavelength of the light in air? Figure 26.45 Problem 32.
A glass sheet measuring 10.0 cm × 25.0 cm is covered by a very thin opaque coating. In the middle of this sheet is a thin, straight scratch 0.00125 mm thick, as shown in Figure 26.45 . The sheet is totally immersed beneath the surface of a liquid having an index of refraction of 1.45. Monochromatic light strikes the sheet perpendicular to its surface and passes through the scratch. A screen is placed under the liquid a distance 30.0 cm away from the sheet and parallel to it. You observe that the first dark fringes on either side of the central bright fringe on this screen are 22.4 cm apart. What is the wavelength of the light in air? Figure 26.45 Problem 32.
A glass sheet measuring 10.0 cm × 25.0 cm is covered by a very thin opaque coating. In the middle of this sheet is a thin, straight scratch 0.00125 mm thick, as shown in Figure 26.45. The sheet is totally immersed beneath the surface of a liquid having an index of refraction of 1.45. Monochromatic light strikes the sheet perpendicular to its surface and passes through the scratch. A screen is placed under the liquid a distance 30.0 cm away from the sheet and parallel to it. You observe that the first dark fringes on either side of the central bright fringe on this screen are 22.4 cm apart. What is the wavelength of the light in air?
air is pushed steadily though a forced air pipe at a steady speed of 4.0 m/s. the pipe measures 56 cm by 22 cm. how fast will air move though a narrower portion of the pipe that is also rectangular and measures 32 cm by 22 cm
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