Answer:
The width of the river is
Explanation:
From the question we are told that
The distance of the base line is D = 130 m
The angle is
A diagram illustration the question is shown on the first uploaded image
Applying Trigonometric Rules for Right-angled Triangle,
Now making z the subject
Answer:
The induced emf in the coil is 170 volt and its direction is clockwise direction.
Explanation:
Given that,
Number of turns of a coil, N = 50
Initial area,
Final area,
Time, t = 0.1 s
The magnetic field points into the page and has a strength of 1.36 T.
We need to find the magnitude and direction of the average value of the induced emf. Due to change in area of the coil and emf will be induced in it. The induced emf is given by :
So, the induced emf in the coil is 170 volt and its direction is clockwise direction. Hence, this is the required solution.