Two conducting rods are made of the same material and have the same length. conductor b has a diameter twice that of conductor a but is hollow with an inner diameter of conductor a.
1. what is the resistance ratio ra/rb, measured between their ends?
2. if the temperature of a rod changes by 1.0 °c, what percentage changes in r, l, and a will occur?
3. what conclusion do you draw?

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form