Fluctuation in the Solar Constant The solar constant S is the amount of per unit area that reaches Earth's atmosphere from the sun. It is equal to 1361 wats per m2 but varies slightly throughout the seasons. This fluctuation AS in S can be calculated using the formula energy 27(82.5- N) AS = 0.034S sin 365.25 In this formula, N is the day number covering a four-year period, where N= 1l cor responds to January 1 of a leap year and N= 1461 corresponds to December 31 of the fourth year. (Source: Winter, C., R. Sizmann, and L. L.Vant-Hull, Editors, Solar Power Plants, Springer-Verlag.) (a) Calculate AS for N = 80, which is the spring equinox in the first year. %3D %3D %3D (b) Calculate AS for N = 1268, which is the summer solstice in the fourth year. (c) What is the maximum value of AS? (d) Find a value for N where AS is equal to 0.

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rm² but varies slightly throughout the seasons. This fluctuation AS in S can be
58. Fluctuation in the Solar Constant The solar constant S is the amount of energy
per unit area that reaches Earth's atmosphere from the sun. It is equal to 1367 wats
(a) March 15 (day 74)
(e) October 1
(f) December 31
(d) June 25
energy
58. Fluctuation in the Solar Constant The solar constant S is the amount of
per
per m2 but varies slightly throughout the seasons. This fluctuation AS in S
calculated using the formula
2(82.5 - N)
AS = 0.034S sin
365.25
In this formula, N is the day number covering a four-year period, where N= 1 cor.
responds to January 1 of a leap year and N = 1461 corresponds to December 31 of
the fourth year. (Source: Winter, C., R. Sizmann, and L. L. Vant-Hull, Editors, Solar
Power Plants, Springer-Verlag.)
%3D
(a) Calculate AS for N = 80, which is the spring equinox in the first year.
(b) Calculate AS for N = 1268, which is the summer solstice in the fourth year.
(c) What is the maximum value of AS?
(d) Find a value for N where AS is equal to 0.
4.2
Musical Sound Waves Pure sounds produce single sine waves on an oscilloscope.
Find the amplitude and period of each sine wave graph. On the vertical scale, each
square represents 0.5. On the horizontal scale, each square represents 30° or 7.
Transcribed Image Text:rm² but varies slightly throughout the seasons. This fluctuation AS in S can be 58. Fluctuation in the Solar Constant The solar constant S is the amount of energy per unit area that reaches Earth's atmosphere from the sun. It is equal to 1367 wats (a) March 15 (day 74) (e) October 1 (f) December 31 (d) June 25 energy 58. Fluctuation in the Solar Constant The solar constant S is the amount of per per m2 but varies slightly throughout the seasons. This fluctuation AS in S calculated using the formula 2(82.5 - N) AS = 0.034S sin 365.25 In this formula, N is the day number covering a four-year period, where N= 1 cor. responds to January 1 of a leap year and N = 1461 corresponds to December 31 of the fourth year. (Source: Winter, C., R. Sizmann, and L. L. Vant-Hull, Editors, Solar Power Plants, Springer-Verlag.) %3D (a) Calculate AS for N = 80, which is the spring equinox in the first year. (b) Calculate AS for N = 1268, which is the summer solstice in the fourth year. (c) What is the maximum value of AS? (d) Find a value for N where AS is equal to 0. 4.2 Musical Sound Waves Pure sounds produce single sine waves on an oscilloscope. Find the amplitude and period of each sine wave graph. On the vertical scale, each square represents 0.5. On the horizontal scale, each square represents 30° or 7.
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