Calculate the velocity of the car between 20 and 30 sec if it is 5/30-4/20
1 answer:
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Answer:
The length of the bridge during the hottest part of summer is
Explanation:
From the question we are told that
The length of the steel bridge is
The temperature for this length is
The temperature at summer
The coefficient of linear expansion is
Generally the change in length of the steel bridge is mathematically represented as
Substituting value
The length of the bridge in summer is mathematically evaluated as
Substituting values
The magnitude and sign of the second charge will be + 8.6241×10⁻¹⁹ C. The principal of the Columb's law is used in the given problem.
<h3>What is Columb's law?</h3>The force of attraction between two charges, according to Coulomb's law, is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.
Charges that are similar repel each other, whereas charges that are diametrically opposed attract each other.
They will repel, moving in opposite directions at the same speed. Because the magnitude and nature of the charge are the same.
The given data in the problem is;
q₁ is the charge 1 = 4.4 nC = 4.4 ×10⁻⁹ C
F is the repulsive force = 36 mN =36 ×10⁶ N
d is the distance = 0.70 m
The Coulomb force is found as;
Hence, the magnitude and sign of the second charge will be + 8.6241×10⁻¹⁹ C.
To learn more about Coulomb's law, refer to the link;
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