A diffraction grating has 6000. lines per centimeter ruled on it
What is the angular separation between the second and the third orders on the same side of the central order when the grating is illuminated with a beam of light of wavelength 550. nm?
40.5°
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A cable with known tension force T is anchored at C and passes over a frictionless drum (see figure). The pin force components Bx and By (in terms of cable force variable T) for the pin connection at B are:
(A) 2T, 2T
(B) 22T, T
(C) 2T, 2T
(D) 2T, 3T/2
A solar ________ is a sudden, violent disruption around sunspots, releasing a tremendous amount of energy in almost all wavelengths
A) flare B) aurora C) granule D) sunspot E) prominence
As minerals crystallize in cooling magma, are the minerals with lower amounts of silica or the minerals with higher amounts of silica the first to crystallize?
What will be an ideal response?
A shock wave is produced when the speed of an object
A) matches the speed of sound in air. B) exceeds the speed of sound in air. C) greatly increases in amplitude. D) none of the above