What is the reactance of a 1.0 mH inductor at 60 Hz?
What will be an ideal response?
0.38 ?
You might also like to view...
If a lamp has resistance of 120 W when it operates at 200 W, what is the applied voltage?
a. 120 V c. 110 V b. 220 V d. 155 V
Why is thermal escape of atmospheric gas much easier from the Moon than from Earth?
A) The Moon's average surface temperature is lower than Earth's. B) The Moon lacks a global magnetic field, while Earth has one. C) Outgassing on the Moon releases gases with lower masses than does outgassing on Earth. D) The Moon's gravity is so much weaker than Earth's.
What does E = mc2 say--that all energy has mass, or that all mass has energy?
A) All mass has energy. B) It says neither of these. C) All energy has mass. D) It says both of these.
The diagram below illustrates the radioactive decay of Potassium (40K), which has a half-life of 1.3 billion years. If a lunar rock is found that currently contains 5 grams of 40K, and it is determined that the sample contained 20 grams when it was formed, how old is the lunar rock?
a.
6.5 billion years
b.
19.5 billion years
c.
2.6 billion years
d.
3.9 billion years
e.
4.6 billion years