How many photons of solar radiation strike the surface
If a green leaf has an area of 2.75cm^2 and solar radiation is 1030 W/m^2, how many photons of solar radiation strike the surface of the leaf per second? Assume 3 significant figures and an average wavelength of 504 nm for solar radiation.
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The Steel has Sy= 400MPA. Determine the safety factor if the tank diameter is 0.5m with a 1-mm wall thickness and its length is 1 m.
Calculate the entropy change associated with the conversion of 0.75 moles of water at 50 Celcius to -10 celcius. The molar heat capacity of water is 75.3 J/mol celcius and the molar heat capacity of ice is 3.7 J/mol celcius.
What is the pressure (in atmospheres) inside a container of gas connected to a mercury-filled open-end manometer when the level in the arm connected to the container is 28.3cm higher than the level in the arm open to the atmosphere.
Calculate the number of moles of Nitrogen dioxide that could be prepared from 0.35 mole of nitrogen monoxide and 0.25 mole of oxygen: 2NO(g)+O2(g) -> 2NO2(g)
9.5.3 1kg of a fluid is compressed according to a law pn = 0.25, where p is in bar and n is in m3/kg. The final volume is ¼ of the initial volume.
Acid Phosphatase was assayed at [S] = 2x10-5 M. The Km for the substrate was 5x10-4 M. At the end of one minute 2.5% of the substrate, pNPP, had been converted to pNP (a product).
A bookshelf contains 20 textbooks for different subjects. Among those, 10 of them are used ones, and 10 of them are brand new. You select 2 books and sell one at a time on Oct 11, and Oct 12.
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The rules or expectations that determine and regulate appropriate behavior within a culture, group, or society" (Bell, 2013, p. 1).
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