Rework Example 4.2, now assuming that the house has 14 windows, each measuring 45 inches high by 32 inches wide. When you buy the house, they’re single- pane windows, but when you upgrade the insulation, you also upgrade the windows to the best you can buy (see Table 4.2). Remember that the windows replace some of the wall area. Neglect any solar gain through the windows, which would increase your savings even more

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.