Question

) A hot air balloon along with its cargo has a mass of 4.0 x 105 kg, and it holds 7.0 x 10 5 m3 of hot air. It is floating at a constant height in air with a density of 1.29 kg/m3. What is the density of the hot air in the balloon

Answer 1

Answer:

0.72 kg/m^3

Explanation:FIRST FIND UPTHRUST WHICH SHOULD BE EQUAL TO WEIGHT OF HOT BALLOON. SUBTRACT WEIGHT OF PERSONS TO GET WEIGHT WEIGHT OF HOT AIR . DIVIDE WEIGHT BY 9.8 TO GET MASS OF HOT AIR . SINCE VOLUME IS GIVEN FIND DENSITY . SEE ATTACHMENT