Answer:
Explanation:
Given
Each student exert a force of
Let mass of car be m
there are 18 students who lifts the car
Total force by 18 students
therefore weight of car
mass of car
(b)
This reaction appears to be destroying the logs. when it is over only ash will remain, the law of conservation of mass tells us
1 answer:
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Answer:
Explanation:
The electric flux is defined as the multiple of electric field and the area that the electric field passes through, such that
When calculating the electric flux, the angle between the directions of electric field and the area becomes important, especially if the angle is changing with time.
The above formula can be rewritten as follows
where θ is the angle between the electric field and the area of the loop. Note that, the direction of the area of the loop is perpendicular to the plane of the loop.
If the loop is rotating with constant angular velocity ω, then the angle can be written as follows
At t = 0, cos(0) = 1 and the electric flux through the loop is at its maximum value.
Therefore the electric flux can be written as a function of time