(the answer is not 0.482)
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Physics, 13.01.2021 21:30 kargarzadehsm
(the answer is not 0.482)
Answers: 1
Physics, 21.06.2019 18:00, yassinesayedahmad1
Assuming weightless pulleys and 100% efficiency, what is the minimum input force required to lift a 120 n weight using a single fixed pulley?
Answers: 2
Physics, 21.06.2019 22:30, christson805
The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage
Answers: 2
Physics, 22.06.2019 02:10, allytrujillo20oy0dib
How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by
Answers: 2
Physics, 22.06.2019 02:30, jendun123ovrxij
The particle in a two-dimensional well is a useful model for the motion of electrons around the indole ring (3), the conjugated cycle found in the side chain of tryptophan. we may regard indole as a rectangle with sides of length 280 pm and 450 pm, with 10 electrons in the conjugated p system. as in case study 9.1, we assume that in the ground state of the molecule each quantized level is occupied by two electrons. (a) calculate the energy of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels. 9.27 electrons around the porphine ring (4), the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. we may treat the group as a circular ring of radius 440 pm, with 20 electrons in the conjugated system moving along the perimeter of the ring. as in exercise 9.26, assume that in the ground state of the molecule quantized each level is occupied by two electrons. (a) calculate the energy and angular momentum of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.
Answers: 1
Mathematics, 17.10.2019 03:10
Mathematics, 17.10.2019 03:10
Mathematics, 17.10.2019 03:10
Mathematics, 17.10.2019 03:10