Can someone answer this please? Study the scenario. A fan spins in a small room. The system consists of the fan, the Earth, and the air. Which choice best describes the role of thermal energy in energy transformations? A)The fan blades also warm up as they spin, indicating that some of the electrical energy is converted to thermal energy. Thermal energy reduces the amount of electrical energy being converted into mechanical energy. B)The fan blades also warm up as they spin, indicating that some of the heat energy from the surroundings is going to the fan. Thermal energy increases the amount of electrical energy being converted into mechanical energy. C) The fan blades cool down as they spin, indicating that some of the electrical energy is converted into heat energy and going into the surroundings. Thermal energy reduces the amount of electrical energy being converted into kinetic energy. D)The fan blades also warm up as they spin, indicating that some of the heat energy from the surroundings is going to the fan. The total amount of electrical energy is all converted into mechanical energy.
Answers: 3
Physics, 22.06.2019 13:20
Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.
Answers: 1
Physics, 22.06.2019 16:30
Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?
Answers: 2
Physics, 22.06.2019 17:20
Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.
Answers: 1
Can someone answer this please? Study the scenario. A fan spins in a small room. The system consists...
Mathematics, 15.12.2020 01:00
Biology, 15.12.2020 01:00
Arts, 15.12.2020 01:00
Biology, 15.12.2020 01:00
Mathematics, 15.12.2020 01:00
Mathematics, 15.12.2020 01:00
Biology, 15.12.2020 01:00
Computers and Technology, 15.12.2020 01:00
Arts, 15.12.2020 01:00