There is a repulsive force between two charged objects when they are of like charges/ they are likely charged (like charges repel each other)
Answer:
(a) τ=2.88 s, (b) q₀= 30.6μC and (c) t=1.434s
Explanation:
A RC circuit is an resistor(R)-capacitor(C) electric circuit.
(a) In a resistor-capacitor circuit, the time constant (τ) can be calculated by:
<em>where R: is the resistence and C: the capacitance of the capacitor</em>
(b) The maximum charge (q₀) is giving by:
<em>where ε: is the voltage across the capacitor</em>
(c) The time (t) that take the charge (q) to build up to 12 μC can be calculated from the next equation:
Have a nice day!
1. Is A. at the poles because thats where the magnetic field is going out then coming back into the earth to produce the magnetic field.
2. Again its A. because the compass needle is attracted to " north " which is magnetic south. It does this because opposites attract.
3. This one would be B. Because if the magnets were being repelled the magnetic field lines would look like there was a line that the field hit and bounced off of it.
4. This answer is A. the magnetite helps them migrate so they know which way is north and which way is south.
5. This answer is A. Because without the domains there wouldn't be poles on the magnetic object. <span />
The only evidence you have that you exist as a self-aware being is your conscious experience of thinking about your existence. Beyond that you're on your own. You cannot access anyone else's conscious thoughts, so you will never know if they are self-aware.
C^2=a^2+b^2
c^2=45^2+45^2
c^2=4050
c=63.64
c=64
The answer is D.
