During a jog, a car approaches me from behind. The car is making a sound with a frequency of 620 Hz. It is driving towards me at 18 m/s and I am jogging away from it at
2 m/s. What is the frequency that I hear?

the largest known star in the universe is uy scuti, a hypergiant with a radius around 1,700 times larger than the

"i have always loved contemporary art and made it a general goal to work within the field. after a few nonprofit internships at museums and galleries, i decided to try the for-profit art world and was offered a job as the ad assistant at the magazine. i much prefer the pace of the for-profit art community and have stayed with the company for three years, with a promotion to an account manager last spring."

i just did this and got a 100.