21. Question 21.

PART A

What is revealed by the way the author portrays the interrelationships among Dymov and his wife and her friends?

By showing Dymov's lack of imagination, the author makes Olga Ivanovna and her artistic friends seem more admirable.

By showing Olga Ivanovna's reverence for her husband, the author suggests that there will be tension between her and her more superficial friends.

By showing how Olga Ivanovna and her friends mostly ignore Dymov, the author emphasizes Dymov's tolerant nature.

By showing Dymov's complete lack of interest in his wife's and her friends' interests, the author suggests that Dymov is self-centered.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

ye

explanation:

i dont kmow it? !