Two birds sit at the top of two different trees 17.8 feet away from one another. the distance between the first bird and a birdw
1 answer:
The angle of depression between the bird and the birdwatcher is 61.32°
In the question, it is said that the distance between two birds is 17.8ft and the distance between the first bird and the birdwatcher is 37.4ft. So, when we draw an image in our mind then we can say that this whole system forms a right-angle triangle with a base of 17.8ft and a hypotenuse of 37.4ft. As we know that to calculate the angle of depression we will use trigonometric equations here i.e.,
cos x = Base/Hypotenuse
cos x = 17.8 / 37.4
cos x = 0.48
x = cos⁻¹(0.48)
x = 61.32°
Thus, the angle of depression is 61.32°.
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Answer:
a.)
b.)
Explanation:
<u>Electric Field and Potential Difference</u>
There are several conditions that must be met for a spark to be created into an air gap. Once the physical conditions are fixed, a minimum electric field is necessary for the spark to be initiated. Let s be the separation between the electrodes and V their potential difference. The electric field is
a.)
Solving for V
The separation is
Thus the potential difference is
b.) If the separation was greater, the applied voltage needs to be greater if the electric field has to be constant. One possible measure to keep electrodes as close as possible is to build them as sharp edges. It gives the spark an easier path to travel to.
If the separation is 0.05 inches =0.00127 m