Answer:
B = 1.3734*10^-7 T
Explanation:
I'm going to take a shot at this since I doubt anyone else would, but I might be wrong, so keep that in mind. Okay, with that out of the way, we know the equation for capacitance:
We also know that it is put in series with a resistor. Since it is initially uncharged and is in series with a battery, it is step response. Using KVL, we will get:
We also know from Ampere's law, there is a magnetic field because of the current induced (right hand rule). From this we can calculate the magnetic field using a contour integral. We can simplify and avoid using Biot-Savart law by using the path of integration of a circle, thus:
Okay now we got all that out of the way, lets first find the area of the plates so we can use the first equation to get capacitance.
Now we need to calculate the current through the capacitor. To do this, use the step response to calculate the voltage drop across the capacitor and then use KVL calculate the current through the resistor. So:
Finally Ampere's law:
B = 1.3734*10^-7 T
Answer:
I think the answer is 18 km/h
Explanation:
Answer:
Explanation:
The ant is under an uniform motion. So, we get the time taken by the ant to cross the strip from the definition of speed:
In this case, we use the vertical speed of the ant (), since the ant crosses the strip that is 34.2 cm wide (vertically). So:
Answer: E. 2A
Explanation:
Amplitude(A) of a wave is the displacement of a body from its position of rest. The maximum value of the amplitude is the crest and the minimum value is the trough.
For a wave to make a cycle, it has to move to and from from its point of displacement.
If the red spot on the string completes a cycle, this means it must have pass through the crest and the trough making it 2 amplitudes.