Which would be best categorized as heat transfer by conduction? a) wearing a white shirt to stay cool on a summer day. b) cooling a burn on your hand by running your hand under cold water. c) feeling the heat from a light bulb with your hand when touching the bulb. d) feeling the heat from a light bulb while holding your hand from 6 inches away.

The answer is C) Feeling the heat from a light bulb with your hand when touching the bulb. :)

Option (C) is the correct answer.

Explanation:

When two substances or objects are at different temperature and heat from object 1 flows to object 2 when both of them are placed touching each other then this process is known as conduction.

For example, when we touch a light bulb then heat from the bulb flows into the hand.

Thus, we can conclude that out of the given options, feeling the heat from a light bulb with your hand when touching the bulb is best categorized as heat transfer by conduction.

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-