Answers: 3
Chemistry, 21.06.2019 22:30
Hot air balloons float in the air because of the difference in density between cold and hot air. in this problem, you will estimate the minimum temperature the gas inside the balloon needs to be, for it to take off. to do this, use the following variables and make these assumptions: the combined weight of the pilot basket together with that of the balloon fabric and other equipment is w. the volume of the hot air inside the balloon when it is inflated is v. the absolute temperature of the hot air at the bottom of the balloon is th (where th> tc). the absolute temperature of the cold air outside the balloon is tc and its density is Δc. the balloon is open at the bottom, so that the pressure inside and outside the balloon is the same. as always, treat air as an ideal gas. use g for the magnitude of the acceleration due to gravity.
Answers: 1
Chemistry, 22.06.2019 08:00
Asap! will give brainiest when a heat wave strikes a region causing more people to run air-conditioning units, electrical demand increases. what needs to be done to meet this increased demand? raising the control rodslowering the control rodsremoving the control rods
Answers: 1
Chemistry, 22.06.2019 13:30
Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?
Answers: 3
Chemistry, 22.06.2019 14:30
Which of the following describes a situation where competition between producers exists
Answers: 1
1. A student wants to test if giving dogs a toy to play with makes their tail wag more. He gives dog...
Spanish, 01.04.2020 20:44
Mathematics, 01.04.2020 20:44
Mathematics, 01.04.2020 20:44
Geography, 01.04.2020 20:44
History, 01.04.2020 20:44
Social Studies, 01.04.2020 20:44
Mathematics, 01.04.2020 20:44
Biology, 01.04.2020 20:44
Mathematics, 01.04.2020 20:44
Social Studies, 01.04.2020 20:44