Consider an AC series circuit containing a coil, capacitor, and resistor. Doubling the frequency will change the inductive reactance by what factor?
a. 1.0
c. 1/2
b. 1.41
d. 2.0
D
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A long hollow cylindrical conductor (inner radius = 2.0 mm, outer radius = 4.0 mm) carries a current of 12 A distributed uniformly across its cross section. A long wire which is coaxial with the cylinder carries an equal current in the same direction. What is the magnitude of the magnetic field 3.0 mm from the axis?
a. 1.1 mT b. 1.4 mT c. 1.7 mT d. 2.0 mT e. 0.2 mT
The concept of force is fundamental to
A) Newton's theory of gravitation. B) Einstein's theory of gravitation. C) both of these D) neither of these
The stage II creep rate in metals and ceramics at constant stress and temperature is
(a) Transient and decreasing. (b) Increasing toward rupture. (c) A constant. (d) Parabolic.
When observing a very distant quasar, we are actually seeing the universe the way it was when it was much younger than it is today
Indicate whether the statement is true or false