I dont know what the statements are but concave lens are thinner in the middle which cause light to diverge or scatter
The current in the home is (AC) and the AC tends the flow near the surface of the cross section area the wire according to (skin effect) ,on the other hand , the current in a battery is (DC) and DC flow in all of the cross section area of the wire
Answer:
τ = (7.96 x 10⁴ m⁻³)T
This is the expression for maximum allowable shear stress in terms of the maximum torque applied in Nm.
Explanation:
The maximum allowable shear stress on the solid shaft can be given by the torsional formula as follows:
τ = Tc/J
where,
τ = Maximum Allowable Shear Stress = ?
T = Maximum Torque Applied to the Shaft
c = maximum distance from center to edge = radius in this case = 20 mm = 0.02 m
J = Polar Moment of inertia = πr⁴/2 = π(0.02 m)⁴/2 = 2.51 x 10⁻⁷ m⁴
Therefore,
τ = T(0.02 m)/(2.51 x 10⁻⁷ m⁴)
<u>τ = (7.96 x 10⁴ m⁻³)T</u>
<u>This is the expression for maximum allowable shear stress in terms of the maximum torque applied in Nm.</u>
You've got yourself an acute, scalene triangle there.
Answer:
Explanation:
mass, m = 1.25 kg
angular speed, ω = 235 rad/s
The moment of inertia of the cylinder is given by
I = 1/2 mr²
(a) the kinetic energy of rotation is given by
K = 1/2 Iω²
K = 1/4 mr²ω²
where, m is the mass of cylinder and r be the radius of cylinder
K = 0.25 x 1.25 x 0.32 x 0.32 x 235 x 235
K = 1767.2 J
(b) the kinetic energy of rotation is given by
K = 1/2 Iω²
K = 1/4 mr²ω²
where, m is the mass of cylinder and r be the radius of cylinder
K = 0.25 x 1.25 x 0.7 x 0.7 x 235 x 235
K = 8456.33 J
