Physics, 09.11.2019 13:31 kelseydavid69
The magnetic force on a wire 274 cm long is . if electrons move through the wire in 1.90 s, what is the magnitude of magnetic field that is perpendicular to the wire?
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Lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?
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Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied. true or false
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Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.
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Physics, 22.06.2019 02:30
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
The magnetic force on a wire 274 cm long is . if electrons move through the wire in 1.90 s, what is...
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