The three-member frame structure in fig. p2.2-14 is subjected to a downward vertical load p at pin c. the pins at b, c, and d apply axial loads to members bd and cd, whose cross-sectional areas are a1 0.5 in2 and a2 1.0 in2, respectively. (a) if the axial stress in member bd is 1 1200 psi, what is the value of force p? (b) what is the corresponding axial stress, 2, in member cd?

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )