E=Q2/τ
e= 120/30
e=4 (eficiência da máquina frigorífica)
Exercício para entregar:...
Physics, 26.05.2021 01:10 Falconpride4079
E=Q2/τ
e= 120/30
e=4 (eficiência da máquina frigorífica)
Exercício para entregar: Numa máquina frigorífica são retirados 240 J do congelador( fonte fria). No processo, a atmosfera ( fonte quente) recebe 300 J. Calcule o trabalho do compressor e a eficiência dessa máquina térmica.
Answers: 1
Physics, 21.06.2019 20:30
When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m
Answers: 2
Physics, 22.06.2019 12:00
Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.
Answers: 1
Physics, 22.06.2019 17:00
Explain what will happen if decomposers were apsent from a forest ecoysystem.
Answers: 1
Business, 15.01.2020 05:31
Social Studies, 15.01.2020 05:31
Chemistry, 15.01.2020 05:31
Mathematics, 15.01.2020 05:31
History, 15.01.2020 05:31
History, 15.01.2020 05:31
Spanish, 15.01.2020 05:31
English, 15.01.2020 05:31
English, 15.01.2020 05:31
Mathematics, 15.01.2020 05:31