Light from a HeNe laser (632.8 nm wavelength) is directed upon a human hair, in an attempt to measure its diameter by examining the diffraction pattern. The hair is mounted in a frame 7.5m from a wall and the central diffraction maximum is measured to be 14.6 cm wide. What is the diameter of the hair?
A. 65 microns
B. 32.5 microns
C. 43.3 microns
D. 86.6 microns
A. 65 microns
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In comparing two waves of the same type and same amplitude, the one with the longer wavelength would have
A) lower frequency. B) both higher energy and higher frequency. C) higher energy. D) both higher energy and lower frequency. E) higher frequency.
Which of the following planets cannot be in opposition?
a. Venus b. Jupiter c. Saturn d. Mars
Carbon chains are harder to assemble and disassemble than their silicon counterparts
Indicate whether the statement is true or false
The ____ of a planet is the region around the planet where the magnetic field is able to deflect the solar wind and other charged particles
a. aurora b. magnetosphere c. hydrosphere d. corona e. Schwarzschild radius