Why are some pots and pans design with wooden handles?
2 answers:
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The force generated by a magnetic field B perpendicular to a wire carrying a current I is
where L is the length of the wire.
If we divide both sides for L, we get
where the ratio on the left is the force per meter of length, which is exactly what we want to find. So:
where L is the length of the wire.
If we divide both sides for L, we get
where the ratio on the left is the force per meter of length, which is exactly what we want to find. So:
Hence the period is 1 sec.
<u>Explanation</u>:
- If the time taken by a single pendulum is 0.25 seconds. Then a pendulum will move to two extreme positions from one mean position only. That will means that the total time period is given by
T = 2 0.25 = 0.50 seconds.
- A pendulum will oscillate from mean to the extreme, then extreme to mean, then mean to the extreme and again extreme to mean, so it will cover 2 cycles.
Hence, 2 0.50 = 1.