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.

answer:   you might love summer weather, but you don’t want it to feel like the sun is inside your car. but a hot car that just won’t seem to cool down might be a bigger of a problem than you think. your car relies on being at the right temperature.

explanation:

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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