Two aisi 304 stainless steel plates 9 mm thick are subjected to a contact pressure of 1 bar under vacuum conditions for which there is an overall temperature drop of 110°c across the plates. (a) what is the heat flux through the plates? (b) what is the temperature drop across the contact plane? use r"t, c=15 x 10-4 m2·k/w and evaluate the properties of stainless steel at 400 k.

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.