This experimental method of determining the surface tension of a liquid is called the Du Nüoy Ring method. The equation for this is:
σ = F/4πR
where
σ is the surface tension
F is the net force acting on the ring
R is the radius of the center ring
σ = F/4πR = [(16 g - 10 g)(1 kg/1000 g)(9.81 m/s²)]/{4π[(10 m + 9.5 m)/4]}
σ = 9.608×10⁻⁴ N/m
Answer:
q = 1.96 10⁴ C
Explanation:
The elective force is given by
= q E
Where E is the electric field and q the charge.
Let's use Newton's law of equilibrium for the case of the suspended drop
F_{e} –W = 0
F_{e} = W
q E = m g
q = m g / E
Let's calculate
q = 2.0 10⁵ 9.8 / 100
q = 1.96 10⁴ C
<span>Let L and R be the left and right vertical floor reactions
let T be the tension of the rope
summation of all forces is zero
R + L - 500 - 150- 150 = 0
R + L = 800
since the triangle formed is isosceles triangles, the legs are equal
R = L = 400 N
using the summation of the torque
L [ 4] - T[ 3 - (2 *3/5)] = 0
400 [ 4] - T[ 1.8] = 0
T = 1600/1.8
T = 889 N </span>
Answer:
water cycle show the continuous movement of water with in the earth and atmosphere
Explanation:
Hope this helps :)