What is the index of refraction of a refractive medium if the angle of incidence in the air is 40 and the angle of refraction is
1 answer:
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Answer:
18.6 m/s
Explanation:
The frictional force acting on the car is given by:
But the frictional force also corresponds to the centripetal force that keeps the car in circular motion in the turn:
Where v is the maximum speed the car can achieve remaining in the turn. Substituting r=88.0 m and re-arranging the formula, we can find the value of v:
Answer:
<em>The new force is 2/3 of the original force</em>
Explanation:
<u>Coulomb's Law </u>
The electrical force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between the two objects.
Written as a formula:
Where:
q1, q2 = the objects' charge
d= The distance between the objects
Suppose the first charge is doubled (2q1) and the second charge is one-third of the original charge (q2/3). Now the force is:
Factoring out 2/3:
Substituting the original force:
The new force is 2/3 of the original force