Answer:
2.4103
Step-by-step explanation:
The first step in evaluating the sample standard deviation of a data set involves the determination of the sample mean.
The sample mean is simply the average value of the data set;
sample mean =
The next step is to evaluate the sum of the squares of deviations from the mean;
sum of squares of deviation =
We then divide the sum of squares of deviation by (n-1) where n is the sample size to obtain the sample variance;
variance =
The standard deviation is simply the square-root of variance;
The frictional force between the tires and the road prevent the car from skidding off the road due to centripetal force.
If the frictional force is less than the centripetal force, the car will skid when it navigates a circular path.
The diagram below shows that when the car travels at tangential velocity, v, on a circular path with radius, r, the centripetal acceleration of v²/ r acts toward the center of the circle.
The resultant centripetal force is (mv²)/r, which should be balanced by the frictional force of μmg, where μ = coefficient of kinetic friction., and mg is the normal reaction on a car with mass, m.
This principle is applied on racing tracks, where the road is inclined away from the circle to give the car an extra restoring force to overcome the centripetal force.
Answer:
The figure above shows the graph of a function f with domain 0 ≤ x ≤ 4. Which of the following statements are true? Show Video ... If there is no c, where -2 < c < 2, for which f'(c) = 0, which of the following statements must be true? Show Video ...
Step-by-step explanation:
Answer:
4 feet is with nothing
Step-by-step explanation:
Answer:
7x−y=7 (x= 1 y/7)
Step-by-step explanation: