Answer:
we have formula of frequency :
frequency(f)= speed of sound(c)/wavelength(λ)
for wavelength we swipe it with frequency as follows
λ=c/f
λ=300,000,000/101,700,000
λ=2.949
Average speed = total distance/total time taken
Answer:
+1/3
Explanation:
The lens equation states that:

where
f is the focal length
p is the distance of the object from the lens
q is the distance of the image from the lens
For a diverging lens, the focal length is negative: 
and we also know that the object is placed a distance of twice the focal length, so 
So we can find q from the equation above

And the magnification of the image is given by

I'm not sure but it might explode and make the wood catch fire
Answer:
Well, it has to do something with the force of the train. It's pulling you, a force of gravity
However jumping off results in a different sort of energy, the train know is moving farther away as you jump down. So you end up in a different place
Explanation: