Jay bought a toy car. to make the car move, he must turn a key attached to a spring. turning the key winds the spring tight. the toy car moves when the key id released and the spring unwinds. what’s the main transformation of energy in this example?

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above