All substances have characteristic properties. if one of these properties can be observed without changing the identity of the substance, it must be a a. chemical property. b. physical property. c. biological property. d. universal property.

Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!