Suggest one reason why the bricklayer needs a higher energy diet than the computer operator
1 answer:
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Answer:
a) Q = C*emf
b) Reduction in electric field strength and electric potential
c) Initial current through the resistor = emf/R
d) The final charge = K*C*emf
Explanation:
a) The resistors and capacitors are connected in series with the battery
Using Kirchoff's voltage law, sum of all voltages in the circuit is zero
Let = Voltage dropped across the Resistor
= Voltage dropped across the capacitor
Applying KVL;
.........................(1)
Since the connection is in series, the same current flow through the circuit
Putting and
into equation (1)
At the final charge, the capacitor in fully charged, and current drops to zero due to equilibrium
b) Current starts running through the plate because as the sheet of plastic is inserted between the plates both the electric field intensity and the electric potential reduces. The charge also reduces, then current flows
c) The current through the resistor is the current through the entire circuit ( series connection)
Putting the values of t and I₀ into the formula for I written above
d) NB: The initial charge on the capacitor = C * emf
The final charge will be:
Answer:
Explanation:
Given:
The accelerated energy, U = 1.25 MeV = 1.25 × 10⁶ eV
we know,
1 eV = 1.6 × 10⁻¹⁹ J
thus,
1.25 eV = (1.6 × 10⁻¹⁹) × (1.25) J = 2 × 10⁻¹³ J
Now, Applying the law of conservation of energy, the energy due to acceleration will be equal to the kinetic energy
mathematically,
K.E = U
where,
m = mass of the particle = 1.67 × 10⁻²⁷ kg
v = velocity of the particle
on substituting the values we get
or
or
or
Answer:
Angular acceleration rad/s^2
Explanation:
Given
Initial Angular velocity (w1) rad/s
Final Angular velocity (w2) rad/s
Time taken to change velocity from w1 to w2 seconds
Angular acceleration is equal to the change in angular velocity to the time taken for making thing change
Hence, Angular acceleration
rad/s^2