Consider a 1.5-m-high and 2.4-m-wide glass window. whose thickness is 6 mm and thermal conductivity is k = 0.78 w/m·k. determine the steady rate of heat transfer through this glass window and the temperature of its inner surface for a day during which the room is maintained at 24°c while the temperature of the outdoors is −5°c. take the convection heat transfer coefficients on the inner and outer surfaces of the window to be h1, = 10 w/m2·k and h2 = 25 w/m2·k, and disregard any heat transfer by radiation.

If an inclined plane is 5 m long and 2 m high, what is its mechanical advantage? a. 2.5 b. 3 c. 7 d. 10

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?