Mathematics, 30.07.2019 07:30 nisha87
Hot air is less dense than cool air, so hot air will rise above cool air. increasing the air temperature inside a hot air balloon makes it lighter than the surrounding air, so the balloon can lift up. the density of hot air is about 0.25 kg/m^3 less than that of cool air, which means a cubic meter of hot air can lift about 0.25 kg. what is the minimum volume of hot air needed to lift a hot air balloon carrying 800 kg?
Answers: 1
Mathematics, 21.06.2019 19:30
Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics
Answers: 1
Mathematics, 21.06.2019 19:30
Write the expression 7x^3-28xy^2 as the product of 3 factors
Answers: 2
Mathematics, 21.06.2019 21:30
Nine people are going to share a 128-ounces bottle of soda. how many ounces will each person get drink? choose the correct equation and answer for this situation
Answers: 1
Mathematics, 21.06.2019 22:30
An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount
Answers: 1
Hot air is less dense than cool air, so hot air will rise above cool air. increasing the air tempera...
Mathematics, 23.06.2019 23:00
History, 23.06.2019 23:00
Business, 23.06.2019 23:00
History, 23.06.2019 23:00
English, 23.06.2019 23:00
History, 23.06.2019 23:00