Answer:
3.03°
Explanation:
Given that
Height of the tree branch, h = 4.5 m
Distance of the veterinarian away, d = 85.5 m
The vet is to aim at the monkey at a particular angle. If we consider the force of gravity that will be acting on the dart. Then the angle that will be needed will be calculated as this.
So the angle is
Tan θ = opposite / adjacent
Tan θ = 4.5 m/ 85.5 m
Tan θ = 0.053, then
θ = Tan^-1 (0.053)
θ = 3.03°
Therefore, the angle needed is 3.03°
Answer:
Explanation:
Potential at a point near a charge = Q / 4πε₀ R
where Q is charge given , R is distance of point from the charge .
Q / 4πε₀ R = 40
Electric field E at A = -dV / dR
= .16 x 10⁻³ / 2 x 10⁻⁶
= .08 x 10³
= 80 N/C
E = Q / 4πε₀ R²
80 = Q / 4πε₀ R x R
80 = 40 / R
R = 40 / 80
= .5 m .
Answer:
D I think.
Explanation:
It's hard to tell without the short story that was in the lesson this is a hard question to answer. You can delete this if you want.
You are in one place when you doze off, and in a different place when you awake.