Recall that the action spectrum from engelmann’s experiment plotted the rate of photosynthesis (as measured by oxygen production) versus wavelength. in each of the following graphs, the black line shows engelmann’s original action spectrum deduced from the distribution of aerotactic bacteria around the alga. which red line shows the same action spectrum corrected for the unequal number of photons emitted across the visible spectrum?

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.