Physics, 23.07.2019 10:30 SmallPepsiCan7260
Plants take up phosphorus-containing compounds from the soil through their roots. scientists can add a small amount of radioactive phosphorus-32, which emits beta particles, to fertilizer and determine how fast phosphorus is taken up by the roots into the leaves. the results of this experiment can scientists. from the list below, identify which outcomes can be obtained by applying the results of this experiment. i. identifying hybrid strains of plants that mature faster. ii. farmers achieve better yields per acre. iii. getting more food or fiber at less expense. iv. identifying different fungi that are affecting the growth of plants. a) i and ii b) i, ii, and iii c) ii, iii, and iv d) i, ii, iii and iv
Answers: 1
Physics, 21.06.2019 20:10
Select the correct answer. anna will wear a black dress when she attends het cousin's wedding. which color(s) does the dress absorb? a. all colors b. no colors c. red and green d. white
Answers: 1
Physics, 22.06.2019 00:30
Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass
Answers: 1
Plants take up phosphorus-containing compounds from the soil through their roots. scientists can add...
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