C. course conditions
If the grass is grown then the golf ball will not be able to able to cover good ground distance
<h2>
Answer:</h2>
<em><u>Velocity of throwing arrow = 43.13 m/s.</u></em>
<h2>
Explanation:</h2>
In the question,
Let us say the height from which the arrow was shot = h
Distance traveled by the arrow in horizontal = 61 m
Angle made by the arrow with the ground = 2°
So,
From the <u>equations of the motion</u>,
Now,
Also,
Finally, the angle made is 2 degrees with the horizontal.
So,
Final horizontal velocity = v.cos20°
Final vertical velocity = v.sin20°
Now,
u = v.cos20° (No acceleration in horizontal)
Also,
So,
We can say that,
<em><u>Therefore, the velocity with which the arrow was shot by the archer is 43.13 m/s.</u></em>
The molecules separate and become atoms and there magnetic forces deprecate and no longer collide
I'm going to make an assumption here. The speed of the wave is 343m/s = c.
The equation for speed of a wave is c = λf. λ: wavelength f: frequency
Substituting known values, we get 343m/s = λ(784Hz)
λ = 0.4375m
I don’t know because it’s very difficult