During lab, you learned about exothermic and endothermic heats of solution. which compounds below could be used for a hot pack? (select all that apply.)

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate

If a simple machine aduces the strength of a force, what must be increased? the speed of the input force the work the simple machine performs the size of the simple machine the distance over which the force is applied