Why are p waves unable to reach the shadow zone

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance