Which of the following is not an example of work, according to the scientific definition a. pulling a sled across the snow b. pushing a grocery cart c. leaning against a brick wall on the side of a building d. lifting a suitcase off the floor

The scientific definition of Work is a force acting through a distance.

When you lean against a brick wall on the side of a building, nothing is moving, so no force is acting through any distance.  So this choice is not an example of work.

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!

d. platinum would have the greatest temperature increase because it has the lowest specific heat.