Which of the three recording stations was closest to the epicenter of the earthquake, based on the seismograms shown below?

recording station a

recording station b

recording station c

cannot be determined.

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

The radius of an atom is closest in size to a