An electric circuit is anything in which electric current flows. Typically it refers to things with wiring like the electronics in your phone, but it can be made of anything that conducts electricity.
Say you have a battery, it basically has a bunch of electrons under a potential (think of gas in a tank under pressure), but the only way for the electrons to move is to move through a conductor, which are molecules with loosely held electrons. If you take a copper wire and touch each end to the two terminals you’ve completed an electric circuit because the electrons can now flow. But you can also put things partway through the wire like a lightbulb, which when the electrons run through it generates light.
The relationship between velocity (v), wavelength (w) and
frequency (f) is expressed as:
v = w f
Plugging in the given values into the equation:
v = 0.643 m (3.25 e 10 Hz)
Where Hz = 1 / s , therefore:
v = 0.643 m (3.25 e 10 / s)
v = 2.09 <span>e 10 m / s</span>
Answer: It is D.
Explanation:
The compass needle pointed in the direction of the current's magnetic field.
Answer:
From Coulomb’s Law of electrostatics the force of attraction or repulsion between two charged bodies is inversely proportional to the square of the distance between their two centers.
If the distance between them is doubled then the force is one-fourth of the original force.
If the distance between them is halved then the force is four times than the original force.
Explanation:
This is about tangential vs angular velocity but it is not part of angular momentum which will be explained later on.
Her angular velocity w = 130 rpm = 2pi 130/60 radian/sec. The radius of rotation r = R/2 = 1.3/2 = .65 m from nose to hand.
Thus the tangential velocity of each hand is v = wr = 2pi*3/2*.65= 6.1261 mps.
Angular momentum L = Iw; where:I = kmr^2 is the inertia and w is the angular velocity. k is a continuous contingent on the shape and density supply of the rotation mass m. So you can see, the problem has zero to do with angular momentum.