The electric field strength at a distance of 0.020 m from a 12 µC point charge is approximately 2.69 x 10⁸ N/C.
The electric field strength (E) at a point near a point charge is given by the equation:
E = k Q / r²
where:
k is Coulomb's constant, equal to 8.99 x 10⁹ Nm²/C²
Q is the magnitude of the point charge in coulombs
r is the distance from the point charge
Substituting the given values:
Q = 12 x 10⁻⁶ C
r = 0.020 m
E = k Q / r²
E = 8.99 x 10⁹ Nm²/C² x 12 x 10⁻⁶ C / (0.020 m)²
E = 2.69 x 10⁸ N/C
So the electric field strength at a distance of 0.020 m from a 12 µC point charge is approximately 2.69 x 10⁸ N/C.
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Answer:
The candy before was fluffy, and the candy after was compacted.
Explanation:
The cloudy cotton candy was light and fluffy due to the air incorporated in it. After Chanel made it dense, the candy became compact and heavier, as she decreased the volume and maintained or increased the amount of sugar.
The cotton candy that Chanel had originally was described as being in a cloudy shape. This suggests that it was light, fluffy, and probably had a lot of air incorporated into it, which is why it was able to maintain such a shape. After she manipulated it to make it more dense, the cotton candy would have lost its cloudy appearance. Instead, it would have become heavier and more compact, because decreasing the amount of air in it increases its density. In other words, the volume of the cotton candy has decreased, but the amount of sugar within that volume has remained the same or increased.
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a) It has been extensively tested and confirmed through experimentation.
b) It is a hypothesis that is yet to be proven.
c) It is a general explanation for a wide range of phenomena.
d) It is based on mathematical equations but lacks empirical evidence.
Answer:
a) A statement must be tested without contradiction to be a law.