Physics, 21.02.2020 00:59 meowmeowcow
You are shopping for a new microwave and notice that the specifications report "Power" in units of "Watts" . This is a bit confusing as you know microwaves are used to "heat" food. In physics class, heat means a transfer of energy into or out of your system and has units of Joules. Luckily, your friend tells you that "Power" is the rate by which energy is transferred. You decide to investigate the relationship between power and temperature change to help you decide how "powerful" of a microwave you want to buy. Specifically, you are wondering what the temperature change of water will be when you heat it with your old microwave at home?
Answers: 2
Physics, 22.06.2019 06:00, ayoismeisalex
Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?
Answers: 1
Physics, 22.06.2019 12:30, spenceraniyah1
An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above
Answers: 3
Physics, 22.06.2019 15:30, tiffuuu
At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.
Answers: 1
You are shopping for a new microwave and notice that the specifications report "Power" in units of "...
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