Three forces act on a hot-air balloon: the lift force from the hot air is 5020 N; the weight of the balloon and load is 4050 N; the leftward force from the wind is 950 N. Draw a free-body diagram of the balloon and find the resultant force.

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation