Physics, 19.08.2020 15:01 rleiphart1
O vídeo a seguir apresenta uma propriedade interessantíssima do gás hélio: a superfluidez. O hélio é um gás com temperatura de liquefação muito baixa (próximo a 4,2 K) e não pode ser solidificado com pressões maiores do que 25 atm. Entretanto, em condições específicas, como a do vídeo abaixo, o gás hélio pode se liquefazer e gerar esse fenômeno interessante, em que o líquido "sobe" as paredes do recipiente, contrariando a atração gravitacional. A superfluidez, como chamamos, ocorre em temperaturas abaixo de 2,5 K. Calcule o valor equivalente na escala Celsius para a temperatura em que o estado de superfluidez ocorre.
Answers: 3
Physics, 22.06.2019 02:30
Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat
Answers: 2
Physics, 22.06.2019 08:30
Hey student studies gravity using objects that have the same mass which two objects have the greatest gravitational force acting between them a. 100kg 1.0m 100kg b. 100kg 2.0m 100kg c. 100kg 2.0m 100kg big d. 100kg big 3.0m 100kg big
Answers: 1
Physics, 22.06.2019 10:00
There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.
Answers: 1
Physics, 22.06.2019 18:30
Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton
Answers: 2
O vídeo a seguir apresenta uma propriedade interessantíssima do gás hélio: a superfluidez. O hélio é...
Mathematics, 20.10.2020 20:01
Mathematics, 20.10.2020 20:01
Biology, 20.10.2020 20:01
Mathematics, 20.10.2020 20:01
Geography, 20.10.2020 20:01
English, 20.10.2020 20:01
Mathematics, 20.10.2020 20:01
Mathematics, 20.10.2020 20:01
History, 20.10.2020 20:01