What would an observer see if she looked at the candle through the concave lens?

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

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2