The final velocity of the object is 16m\s.
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Answer:
electrons pass through a cross section of the wire each second.
Explanation:
According to mole concept:
1 mole of an atom contains
number of particles.
Given : Charge on 1 electron =
Charge on 1 mole of electrons =
To calculate the charge passed we use the equation:
where,
I = current passed = 1 A
q = total charge = ?
t = time required = 1 sec
Putting values in above equation, we get:
When 96500C of electricity is passed , the electrons passed =
1 C of electricity is passed , the electrons passed =
Hence,
electrons pass through a cross section of the wire each second.
Answer:
Explanation:
The speed is a derived quantity as it being derived from a defined set of quantities through a formula. There are only 7 fundamental quantities which are being defined with their individual fundamental units. Of those, length and time are two of them.Thus, it is a derived quantity
Answer:
The frequency of the coil is 7.07 Hz
Explanation:
Given;
number of turn of the coil, N = 200 turn
area of the coil, A = 300 cm² = 0.03 m²
magnitude of magnetic field, B = 30 mT = 0.03 T
maximum value of induced emf, E = 8 V
The maximum induced emf in the coil is given by;
E = NBAω
E = NBA(2πf)

where;
f is the frequency of the coil

Therefore, the frequency of the coil is 7.07 Hz