A single slit forms a diffraction pattern, with the first minimum at an angle of 40° from central maximum. Monochromatic light of 530 nm wavelength is used. The width of the slit, in nm, is closest to:
A) 825
B) 791
C) 757
D) 723
E) 689
A
Physics & Space Science
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Indicate whether the statement is true or false
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How many stars can you see with your naked eye on a clear, moonless night from a dark location?
A) fewer than a thousand B) a few thousand C) about ten thousand D) about a hundred thousand E) more than you could count in your lifetime
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A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s2 . What is the time interval required for it to reach a 6.50-rad displacement after starting from rest?
a. 3.61 s b. 260 s c. 0.163 s d. 22.8 s
Physics & Space Science
The Coriolis force greatly affects the path of air circulation, and is the result of
A) global winds. B) Earth's rotation. C) Earth's tilt. D) all of these
Physics & Space Science