Which statements about Earth’s atmosphere are correct? Check all that apply. helpppp
2 answers:
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Answer:
The power dissipated by the resistor can be calculated as .
Explanation:
- Joules heating law states that any conductor passed with the electric current produces heating effect which is the electric power loss.
- The given circuit has,
resistor (the unit is wrong i question because resistor's unit is ohm not Ampere).
- Current flowing through the circuit is
.
- By using joules heating theory,
,
,
.
- So the power dissipated by the resistor in the circuit is 300 W.
Answer:
Explanation:
Answer:
0.632 m
Explanation:
let the equilibrium separation between the charges is d and the angle made by string with the vertical is θ.
According to the diagram,
d = L Sinθ + L Sinθ = 2 L Sinθ .....(1)
Let T be the tension in the string.
Resolve the components of T.
T Sinθ = k q1 q2 / d^2
T Sinθ = k q1 q2 / (2LSinθ)² .....(2)
T Cosθ = mg .....(3)
Dividing equation (2) by equation (3), we get
tanθ = k q1 q2 / (4 L² Sin²θ x mg)
tan θ Sin²θ = k q1 q2 / (4 L² m g)
For small value of θ, tan θ = Sin θ
So,
Sin³θ = k q1 q2 / (4 L² m g)
Sin³θ = (9 x 10^9 x 0.785 x 10^-6 x 1.47 x 10^-6) / (4 x 0.5 x 0.5 x 4.20 x 10^-3 x 9.8)
Sin³θ = 0.2523
Sinθ = 0.632
θ = 39.2 degree
So, the separation between the two charges, d = 2 x L x Sin θ
d = 2 x 0.5 x 0.632 = 0.632 m
