Which of the following types of radiation diffracts most when it passes through a diffraction grating?
A. Blue
B. Red
C. Violet
D. Yellow
Answer: B
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A stage 4 object can be plotted on the H-R diagram. At this stage, the star will appear:
A) in the middle left of the diagram. B) in the middle right of the diagram. C) just on the bottom right of the main sequence. D) down and to the left of where it will be when it is a main sequence star. E) in the middle of the main sequence.
If the source moves, the wavelength of the sound in front of the direction of motion is ____________ the wavelength behind the direction of motion
a. the same as c. smaller than b. larger than d. unrelated to
A football field is 120 yd long and 50 yd wide. What is the area of the football field, in square meters, given that 1.0 yd = 91.44 cm?
A) 2.4 × 103 m2 B) 3.7 × 103 m2 C) 4.2 × 103 m2 D) 5.0 × 103 m2
A damped oscillator is released from rest with an initial displacement of 10.00 cm. At the end of the first complete oscillation the displacement reaches 9.05 cm. When 4 more oscillations are completed, what is the displacement reached?
a. 7.41 cm b. 6.71 cm c. 6.07 cm d. 5.49 cm e. 5.25 cm