A model airplane with mass 1.3 kg hangs from a rubber band with spring constant 20 N/m. How much is the rubber band stretched when the model
hangs motionless?
A. 0.78 m
B. 0.23
C. 0.64 m
D. 0.082 m
SUBNE

The metric unit of electrical power is the watt volt ampere ohm

Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio ν=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm

Explain why electric current cannot exist if a current doesn't have a voltage source.