Which formula represents final velocity of an object with average acceleration?
2 answers:
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Answer:
The energy that the truck lose to air resistance per hour is 87.47MJ
Explanation:
To solve this exercise it is necessary to compile the concepts of kinetic energy because of the drag force given in aerodynamic bodies. According to the theory we know that the drag force is defined by
Our values are:
Replacing,
We need calculate now the energy lost through a time T, then,
But we know that d is equal to
Where
v is the velocity and t the time. However the time is given in seconds but for this problem we need the time in hours, so,
(per hour)
Therefore the energy that the truck lose to air resistance per hour is 87.47MJ
Complete Question
The complete question is shown on the first uploaded image
Compare the percent error between your value and the accepted value of 1.26 times 10-6 T · m/A. (Use the accepted value given to three significant figures in your calculation.). 100% % error = %
Answer:
The permeability of free space is
The percentage error is % error = 5.25%
Explanation:
From the question we are told that
The slope is , and
Generally
So
From the relation given in the question
Where R is the radius of the coil
N is the number of loops of the coil = 10
Now from the question we are told that
substituting into the equation above
Substituting values
Generally the % error is mathematically represented as
%
Given that the accepted value is
Hence substituting values
%
