A. convert 21.0 cm to inches. show your dimensional analysis setup. b. convert 29.7 cm to inches. show your dimensional analysis setup. c. state the dimensions, in inches, of the international standard for a letter-sized piece of paper. d. which piece of paper is longer: a u. s. letter-sized piece of paper, or an international letter-sized piece of paper? e. suppose the united states adopted the international standard for letter-sized paper. explain at least two things that might result from this change

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?