Physics, 03.02.2021 04:50, pinkmoonlight
When snooping around, Ms. Vaughan discovered that she could hear her parents' conversations a lot better if she put her ear directly on the door compared to when her ear was just really close to the door. Use the words sound waves, medium, solid, and gas to explain to Ms. Vaughan the physics behind her observation. EXPLAIN FULLY IN AT LEAST 3 SENTENCES.
Answers: 2
Physics, 22.06.2019 09:00, cmflores3245
Sobre transformações cĂclicas, sĂŁo feitas algumas afirmações, determine quais estĂŁo corretas. i – a variação de energia interna em uma transformação cĂclica Ă© nula; ii – o trabalho, em uma transformação cĂclica, Ă© sempre positivo; iii – ao completar um ciclo, o gás tem a mesma temperatura com a qual começou a transformação; iv – uma transformação cĂclica Ă©, obrigatoriamente, composta de transformações conhecidas, como adiabática, isocĂłrica, etc: a) i e iii b) i e ii c) ii e iii d) i e iv e) iii e iv
Answers: 1
Physics, 22.06.2019 19:20, anaiyamills
Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.
Answers: 1
Physics, 22.06.2019 21:00, thanitoast84
Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine
Answers: 2
When snooping around, Ms. Vaughan discovered that she could hear her parents' conversations a lot be...
Mathematics, 20.04.2020 17:20
Mathematics, 20.04.2020 17:20
Mathematics, 20.04.2020 17:20
Mathematics, 20.04.2020 17:20
History, 20.04.2020 17:20
Mathematics, 20.04.2020 17:20