A fire truck is moving away from a stationary observer at 15 m/s and has a siren frequency of 650 Hz. The speed of sound is 343 m/s. What is the frequency of the fire truck heard by the observer as the truck leaves?

What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?

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

Aperson standing in a canoe exerts a force of 700 n to throw an anchor over the side. find the acceleration of the canoe if the total mass of the canoe and the person is 100 kg?