When the temperature of a liquid is raised Its refractive index increases Its refractive index decreases Its refractive index disappears Its refractive index doesn t change None of the above

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

Aspecimen of oil having an initial volume of 580cm^3 is subjected to a pressure increase of 4.0 mpa, and the volume is found to decrease by 0.40 cm^3. (a) what is the bulk modulus of the material? (b) what is the compressibility of the material?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity