Acomposite wall separates combustion gases at 2400°c from a liquid coolant at 100°c, with gas and liquid-side convection coefficients of 25 and 1000 w/m2 ⋅ k. the wall is composed of a 12-mm-thick layer of beryllium oxide on the gas side and a 24-mm-thick slab of stainless steel (aisi 304) on the liquid side. the contact resistance between the oxide and the steel is 0.05 m2 ⋅ k/w. what is the rate of heat loss per unit surface area of the composite? sketch the temperature distribution from the gas to the liquid

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?