Answer:
Maximum constant speed with which a car can round is 20.76 m/s.
Explanation:
We know, for car to be move on flat road without slipping its centripetal force should not exceed static friction.
Therefore, maximum value of friction must be equal to centripetal force.
Therefore, 
Now, putting all given values and
.
We get ,
Hence, this is the required solution.
Change in position of object = Displacment
Answer:
A) .27 A
Explanation:
v = ir
i = v/r
equivalent r = 45 * 90 / (45+90) = 30 ohms ( for the two r in parallel)
i = 8v / 30 ohm = 267 mAmps