You recently moved to a new high-rise apartment building and you want to calculate the total energy gain or loss through your floor-to-ceiling bedroom window during a cold, sunny day. Your window is the third one on the series of windows, as shaded in the Figure, with each window being 3.3 meters wide and 2.9 meter high. Air blows past the windows at -15°C and 27 m/s. You also know that: • The outside surface of the glass is at 3°C. • The window exchanges radiation with the sky at -35°C. • The emissivity of the window is 0.7 and its absorptivity is 0.6. • The sun heats the room at a rate of 200 W per square meter of window. Calculate the net rate of heat gain or loss through the window. Clearly indicate whether the calculated amount is energy gain or loss.

%3D Consider for the part in the figure below, a =112, b= 60 and c= 104. b. b 40 80 20 45 Dimensions in mm Analyze the part in order to calculate the coordinates of the centre of gravity in the (z, y, z) system of coordinates. It is essumed that the following process was following for the manufacturing process • Part 1(a cubic piece of dimension 37 x 60 x 60 is cut out of a Part 2 of dimensions 149 x 60 x 80 and then • Part 3 (triangular prism) is welded Part 2

If Gear C and gear A are having the same pitch diameter gear and gear B is twice (larger) the diameter of gear C. If gear C is turning at the speed of 50 RPM, what would be the Rotational speed of Gear B in RPM. (RPM = revolution per minute)

4. What is the cost of 23' of cable if 34' costs $76.00? (round to nearest dollar)