A hot-air balloon is accelerating upward under the influence of two forces, its weight and the buoyant force. for simplicity, co
nsider the weight to be only that of the hot air within the balloon, thus ignoring the balloon fabric and the basket. the hot air inside the balloon has a density of ρhot air = 0.93 kg/m3, and the density of the cool air outside is ρcool air = 1.29 kg/m3. what is the acceleration of the rising balloon?
Let V = the volume of the balloon Force of gravity = V * ?hot * g downward Buoyant force = V * ?cool * g upward Net upward force F = V * ?cool * g - V * ?hot * g
Rocks with hotter temperatures sank to the bottom of the Earth. The rocks with the hottest temperature became the core and the rocks with the least amount of heat became the crust.
