A heat engine takes in 1120 J of heat from the hot reservoir and exhausts 700 J of heat to the cold reservoir. How much work is done by the engine?

Let v1, v2, w be three linearly independent vectors in r 3 . that is, they do not all lie on the same plane. for each of the following (infinite) set of vectors, carefully sketch it in r 3 , and determine whether or not it is a vector space (i. e., a subspace of r 3 ). explain your reasoning

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

Pls ! what are 3 examples of acceleration that doesn’t involve a change in speed ?