At the end of the 24 hr incubation, why was the color of the bromothymol blue solution in Tube 7 different from the color of Lhe bromothymol blue solution in Tube 8 9 In the absence of light, the elodea in Tube 7 could not undergo: the elodea in Tube 8. the elodea in Tube 8. cellular respiration. so it consumed less CO than did the elodea in Tube 8. cellular respiration, so it consumed more CO than did the elodea in Thbe 8. Aryf-B02 45 GO ON TO THE NEXT PAGE. 4Joooooooo4 Passage V The tension in Cable I, T , had a horizontal component. Ix* and a vertical component, T The tension in Cable 2, was purely horizontal, and the tension in Cable 3, T , was purely vertical. If an object is at rest and the sum of the forces acting on it is zero, the object 15 in a state of static equilibrium. In each trial of 2 eKperimentS OD Static equilibrium, 3 cables and a cylinder were arranged as shown in Figure l. Ezperiment I In Trials 1-5, M was 1.0 kg and 8 was varied. Table I lists O, in degrees, as well as T T T, and T , each in newtons (N), for each trial. tensiometers Cable I ly? Cable 2 Table I Cable 3 ly Trial (N) (N) (N) (N) cylinder io. 30° 50° 70° 90° Figure I Cables 1. 2. and 3. each with its own tensiometer (a device used to measure tension). were joined with a single knot. The free ends of Cables l and 2 were attached to an L-shaped support. and a cylinder of mass M was suspended from the free end of Cable 3. Cable I niade an angle e with the top of the support. and Cable 2 made a 90° angle with the side of the support. None of the cables stretched under tension. The tensioll forces acting on the knot, which was in static equilibrium, are shown in Figure 2. Experiment 2 In Trials 6-10, M was varied and 8 was 50° Table 2 lists M as well as T T T , and T for each trial. Ixy ly? Table 2 AT ly Trial (kg) (N) (N) (N) (N) -?9.4 Figure 2 10 ACT-902 46 GO ON TO THE NEXT PAGE. 40000000004
