A 12-V battery maintains an electric potential difference between two parallel metal plates separated by 10 cm. What is the elec
1 answer:
Answer:
The electric field between the plates is 120 V/m.
(c) is correct option.
Explanation:
Given that,
Potential difference = 12 volt
Distance = 10 cm = 0.1 m
We need to calculate the electric field between the plates
Using formula of electric field
Where, V = potential difference
d = distance between the plates
Put the formula
Hence, The electric field between the plates is 120 V/m.
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Answer:
5 mm
Explanation:
Youngs's modulus (Y) is described by the following expression:
Where F is the force exerted on the tendon, L is its length, A is its area and ΔL is its change in length (stretching).
The force in this case is 8 times the weight of the runner:
Therefore, the change in length of the tendon is given by:
the runner's Achilles tendon will stretch by 0.004989 m, which is roughly 5 mm.
Then the separation between the two pennies will be O.354m.
To find the correct answer, we need to know about the electrostatic force of attraction.
<h3>What is the separation between the pennies?</h3>- We have given with the information's,
- As we know that the charge of one electron is 1.6×10^-19C.Thus, the total charge on the penny will be,
- We have the expression for electrostatic force of attraction as,
, here given that the electrostatic force equal to the weight of the system.
- We have to find the separation between the pennies.
Thus, we can conclude that the separation between the pennies is 0.354m.
Learn more about the electrostatic force here:
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