Emma sets up an experiment to study light passing through different materials. What does Emma observe happen to light at the point when it passes into a material where the speed of light changes? A. the light is brighter
B. the light is absorbed
C. the light is refracted
D. the light is reflected
D.

From 0 to 5 seconds john pushed a box 5 meters. from 5 to 10 seconds, paul pushed the same box another 5 meters. who did more work? a. john b. paul c. john and paul did the same amount of work.

If a simple machine reduces the strength of a force, what must be increased?

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.