A laser beam of wavelength 500 nm is shone through two different diffraction gratings A and B , and the pattern is viewed on a distant screen. The pattern from grating A consists of many closely spaced bright dots, while that from B contains few dots spaced widely apart. What can you conclude about the line densities N A and N B (the number of lines/cm) of these two gratings? A. N A > N B . B. N A < N B . C. You cannot conclude anything about the line densities without knowing the order of the bright spots.
A laser beam of wavelength 500 nm is shone through two different diffraction gratings A and B , and the pattern is viewed on a distant screen. The pattern from grating A consists of many closely spaced bright dots, while that from B contains few dots spaced widely apart. What can you conclude about the line densities N A and N B (the number of lines/cm) of these two gratings? A. N A > N B . B. N A < N B . C. You cannot conclude anything about the line densities without knowing the order of the bright spots.
A laser beam of wavelength 500 nm is shone through two different diffraction gratings A and B, and the pattern is viewed on a distant screen. The pattern from grating A consists of many closely spaced bright dots, while that from B contains few dots spaced widely apart. What can you conclude about the line densities NA and NB (the number of lines/cm) of these two gratings?
A. NA > NB.
B. NA < NB.
C. You cannot conclude anything about the line densities without knowing the order of the bright spots.
3.63 • Leaping the River II. A physics professor did daredevil
stunts in his spare time. His last stunt was an attempt to jump across
a river on a motorcycle (Fig. P3.63). The takeoff ramp was inclined at
53.0°, the river was 40.0 m wide, and the far bank was 15.0 m lower
than the top of the ramp. The river itself was 100 m below the ramp.
Ignore air resistance. (a) What should his speed have been at the top of
the ramp to have just made it to the edge of the far bank? (b) If his speed
was only half the value found in part (a), where did he land?
Figure P3.63
53.0°
100 m
40.0 m→
15.0 m
Please solve and answer the question correctly please. Thank you!!
You throw a small rock straight up from the edge of a highway bridge that crosses a river. The rock passes you on its way down, 5.00 s after it was thrown. What is the speed of the rock just before it reaches the water 25.0 m below the point where the rock left your hand? Ignore air resistance.
Chapter 26 Solutions
College Physics Volume 1 (Chs. 1-16); Mastering Physics with Pearson eText -- ValuePack Access Card -- for College Physics (10th Edition)
College Physics: A Strategic Approach (3rd Edition)
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Diffraction of light animation best to understand class 12 physics; Author: PTAS: Physics Tomorrow Ambition School;https://www.youtube.com/watch?v=aYkd_xSvaxE;License: Standard YouTube License, CC-BY