First divide the parts where it is a rectangle and semicircle.
Find the area of the rectangle:
A = length × breadth
A = 18m × 16m
A = 288m²
Then find the area of the semi-circle. We know that the area of a circle is πr² and half that area gives you the area of a semi-circle: πr²/2
A = πr²/2
A = π(6)²/2
A = 18πm² or 56.549m²
Total Area = <u>288m² + 18πm² </u>
OR
288m² + 56.549m² = <u>344.549m²</u>
<em>Hope it helps!</em>
It would take at less 10 minte i guess this the right awnser
The radius of the sphere is r=5.15 cm=0.0515 m, and its surface is given by
So the total charge on the surface of the sphere is, using the charge density
:
The electrostatic force between the sphere and the point charge is:
where
ke is the Coulomb's constant
Q is the charge on the sphere
is the point charge
r is their separation
Re-arranging the equation, we can find the separation between the sphere and the point charge:
Answer:
10
Explanation:
Given that :
Initial Velocity (u) = 25 m/s
Range can be obtained using the relation :
Range = (u² * sin2θ) / g
g = 10m/s ; θ = 45
Range = [10² * sin2(45)] / 10
Range = [100 * 1] ÷ 10
Range = 10
