A multiple slit diffraction grating has a slit separation of 2.00 × 10^-6 m. Find the wavelength of the monochromatic light that will have its second order (m = 2) bright fringe diffracted through an angle of 43.4°. (1 nm = 10-9 m)
a. 616 nm
c. 687 nm
b. 500 nm
d. 120 nm
C
Physics & Space Science
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a. True b. False Indicate whether the statement is true or false
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Which of the following objects is experiencing Earth's gravitational force?
A. a skydiver falling under the force of gravity B. an airplane taking-off C. a boat floating in water D. All of these choices are correct. E. Only an airplane taking-off and a skydiver falling under the force of gravity above.
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The universe's density, compared to the critical density, determines the ________ of space
Fill in the blank(s) with correct word
Physics & Space Science
The central core inside an atom is the
a. electron b. proton c. neutron d. nucleus e. none of the above
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