Engineering, 28.05.2021 01:00 lindamillscotton90

Frederick has a lawnmower that is fueled by gasoline. His science teacher told him that not all of the energy stored in the gasoline in the lawnmower is converted into the energy of motion that spins the lawnmower blade. Which of the following statements is the most accurate explanation of this situation? A. An isolated system always loses energy to its environment. B. The total amount of energy never changes in an open system. C. Energy can leave an open system and enter the surroundings. D. The law of conservation of energy is not obeyed by isolated systems.

Answers: 3

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:10

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Answers: 2

Answer

Engineering, 04.07.2019 18:10

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.

Answers: 2

Answer

Engineering, 04.07.2019 18:10

Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa

Answers: 1

Answer

Engineering, 04.07.2019 18:20

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.

Answers: 3

Answer

You know the right answer?

Frederick has a lawnmower that is fueled by gasoline. His science teacher told him that not all of t...

Questions