3. Which of following is not characteristic of air resistance (a) It always opposes motion
(b) It decrease with speed of object
(c) It increases with surface area
(d) It increases with density of air
4. Feather is dropped on the moon from a height of 1.40 met
m/s2. Determine the time for the feather to fall to the surfa
5. If the ratio of gravity in some solar planet is as mentioned
Fill the table below with suitable numbers: (Note g of Ea

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!

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray