Answer
given,
Power of sound P = 35 W
Distance between micro phone and speaker = 50 m
small microphone Area = 1 cm²
a) intensity of sound at micro phone is



I = 1.11 mW/m²
b) sound intensity level at the position of micro phone is



Answer:
Explanation:
Applying Forces, doing Work and developing Power. Applying Forces: Force is a push or a pull and many forces are acting on you all of the time. ... possible to stretch the rubber band with one hand using your thumb and finger at two different places but ... If you are smart, however, just exerting forces, shouldn't get you tired
<h2>Hello!</h2>
The answer is: A. 4.5 L
<h2>
Why?</h2>
According to the conversion factor which states that:

It means that we have 3.78 L per each gallon or it's equal to say that we 0.26 gallon per each L.The SI unit for liquid volume is the Liter (L)
Let's make the calculations:

So, we have 4.54 L in 1,2 gallons.
Have a nice day!
As per right hand thumb rule if we put our thumb of right hand along the current in the wire then curl of fingers will show the direction of magnetic field.
So here as we can see the fingers in the above case is curled such that in front position its showing towards right.
So the direction of magnetic field near the student in front position must be towards Right.
Is there any numbers to your question?
Keep in mind, the energy is conserved in a pendulum.
Here’s more information:
https://blogs.bu.edu/ggarber/interlace/pendulum/energy-in-a-pendulum/