An owl hoots in the forest and the power density of the hoot is measured to be 2 x 10^13 at a certain point. What is the loudness of the sound in decibels at this same point?

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?