Asolenoid consists of n = 190 turns of wire in a coil of length d = 3 cm and cross-sectional area a = 2 cm2. assume that the magnetic field is uniform inside the solenoid and ignore end effects. (a) write an equation for the magnetic field b produced by the solenoid. express the answer in terms of the current through the coil i, the number of turns n, length of the coil d, and the permeability of free space uo.
(b) using the equation for the magnetic field determined in part a, calculate the magnetic flux through a single loop of the solenoid with a current of i=0.65 a. the coil is d=6 cm long and has a cross-sectional area of a=3 cm and consists of n=190 turns.

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.

What are atoms of the same element with varying number of neutrons

Which type of energy would have nothing to do with ironing clothes? a. heat b. chemical c. electrical d. mechanical