Why is trapped air a good insulator?

A. It stops heat transfer.

B. It is actually a poor insulator.

C. It reduces heat transfer.

D. It increases heat transfer.

For the scenarios in which total internal reflection is possible, rank the scenarios on the basis of the critical angle, the angle above which total internal reflection occurs. At this angle, the refracted ray is at 90 degrees from the normal.

One mole of an gas expannds isothermally to five times to its intitial volume calculate the entropy change in R the gas constant

When the solar system formed the spheres that lost most of their gases became the?

This equation represents Newton's Second Law of Motion, F=ma. It shows the relationship of force, mass, and acceleration.

What are scientific theories?

What is normal distribution in statistics?

Which of the following water samples would be considered acidic

A linearly-polarized electromagnetic (EM) wave has an electric field with amplitude 1000 V/m. You hold a a linear polarizer in front of it and rotate the polarizer so that all of the EM wave is blocked. You then rotate the polarizer 30 degree.

Let y'=4 x. find all values of r such that y = rx^{2} satisfies the differential equation. if there is more than one correct answer, enter your answers as a comma separated list.

What are the starting materials for nuclear fission