Physics, 23.10.2019 04:50 cesargarcia17671
Question 4 a photon of light excites an electron in the pigment molecule of a plant. which of the following best describes what happens next to the energy from that photon? a. the energy is released as light and the electron drops back down to its ground state. b. the excited electron carries the energy to the reaction center complex and oxidizes the primary electron acceptor. c. the excited electron carries the energy to the primary electron acceptor in the reaction center complex. d. the energy is released as heat and the electron drops back down to its ground state. e. the energy is passed to the other electrons in the light harvesting complex until it reaches the reaction center complex, where the excited electron reduces the primary electron acceptor.
Answers: 2
Physics, 22.06.2019 14:30
Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.
Answers: 2
Physics, 22.06.2019 15:50
Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air
Answers: 3
Physics, 22.06.2019 16:30
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?
Answers: 1
Physics, 22.06.2019 17:30
How does the entropy of steam compare to the entropy of ice?
Answers: 2
Question 4 a photon of light excites an electron in the pigment molecule of a plant. which of the fo...
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