When the number of turns in a solenoid and its length are both doubled, the ratio of the magnitude of the new magnetic field inside to the magnitude of the original magnetic field inside is:
a. 0.25
b. 0.50
c. 1
d. 2
e. 4
c
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Main sequence stars are in hydrostatic equilibrium.
Answer the following statement true (T) or false (F)
Beam ACB has a pin support at A and is supported at C by a steel column with a square cross section (E 5 190 GPa, b 5 42 mm) and height L 5 5.25 m. The column is pinned at C and fixed at D. The column must resist a load Q at B with a factor of safety of 2.0 with respect to the critical load. The maximum permissible value of Q is approximately:
(A) 3.0 kN
(B) 6.0 kN
(C) 9.4 kN
(D) 10.1 kN
A 0.500-H inductor is connected into a 110 V rms 60.0-Hz voltage source, with an ammeter in series. What is the rms value of the current through the inductor?
A. 0.189 A (rms) B. 0.292 A (rms) C. 0.584 A (rms) D. 1.19 A (rms) E. 0.093 A (rms)
A(n) ______________ converts mechanical energy into electrical energy
Fill in the blank(s) with correct word