A glass rod acquires charge by rubbing silk cloth. The charge on the glass is due to:
2 answers:
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Answer:
(a) The impedance in the circuit is .
(b)The resistance is .
(c) The inuctance is 0.57 H.
Explanation:
(a)
The expression for the impedance is as follows:
Here, is the rms voltage and
is the rms current.
Put and
.
Therefore, the impedance in the circuit is .
(b)
The expression for the average power is as follows;
Here, is the average power and R is the resistance.
Calculate the resistance by rearranging the above expression.
Put and
Therefore, the resistance is .
(c)
The expression for the impedance is as follows;
Here, is the inductive reactance.
Put and
.
The expression for the inductive reactance in terms of frequency is as follows;
Here, L is the inductance.
Calculate the inductance by rearranging the above expression.
Put and f=50Hz.
L=0.57 H
Therefore, the inuctance is 0.57 H.
Answer: a)
b)
Explanation:
A nuclear fission reaction is defined as the reaction in which a heavy nucleus splits into small nuclei along with release of energy.
a) The given reaction is
Now, as the mass on both reactant and product side must be equal:
Thus three neutrons are produced and nuclear equation will be:
b) For the another fission reaction:
To calculate A:
Total mass on reactant side = total mass on product side
235 + 1 = A + 94 + 2
A = 140
To calculate Z:
Total atomic number on reactant side = total atomic number on product side
92 + 0 = 56 + Z + 0
Z = 36
As Krypton has atomic number of 36,Thus the nuclear equation will be :