A 10-A current flows through a wire for 2.0 min. (e = 1.60 × 10-19 C)
(a) How much charge has passed through this wire?
(b) How many electrons have passed any point in the wire?
What will be an ideal response?
(a) 1200 C (b) 7.5 × 1021
You might also like to view...
When we say that the electromagnetic and weak forces "freeze out" from the electroweak force at 10-10 seconds after the Big Bang, we mean that
A) these forces are important only at temperatures below the freezing point of water—a temperature that the universe reached at an age of about 10-10 second. B) "freezing out" was a term coined by particle physicists who think that the Big Bang theory is really cool. C) prior to this time the electromagnetic and weak forces maintained a single identity, but they possessed separate identities following this time. D) following this time neither the electromagnetic nor the weak force was ever important in the universe again. E) quantum fluctuations by high-speed, relativistic particles in a state of false vacuum cause disturbances in the spacetime continuum, leading to the process described in the question this answer refers to.
The color of a mineral's powder is called its ______________
Fill in the blank(s) with correct word
Sources of red, blue, and yellow light each emit light with a power of 50 mW. Which source emits the least photons per second?
a. the red source b. They all emit the same number per second. c. the blue source d. the yellow source
The force that keeps your feet from sliding as you walk is
a. centripetal force b. weight c. kinetic friction d. static friction e. none of the above