A jet engine emits sound uniformly in all directions, radiating an acoustic power of 3.31×105 W. Find the intensity of the sound at a distance of 44.5 m from the engine.

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

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

Name three different units of energy used to measure heat and describe what type of situations each is usually used.