The sign is subjected to a homogeneous pressure of 80 n/m2 (in the negative z–direction of coordinate system provided) and has a weight of 600 n. determine the principal stresses and the absolute maximum shear stress at point a located at the base of the 6 m– vertical pole that supports the sign. the outer radius of the solid pole is 6 cm.

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.