Which of the following pairs of terms are used to describe what is happening in the video?
a) gas-law process,
b) phase change calorimetry,
c) gas-law process phase change,
d) calorimetry

What is the magnitude of the acceleration vector which causes a particle to move from velocity −5i−2j m/s to −6i+ 7j m/s in 8 seconds. answer in m/s.

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?