10. You are riding in a motorboat at 15 m/s away from a lighthouse. If the lighthouse emits sound from a foghorn at 250 Hz, what is the frequency of
sound you perceive? (Use v = 345 m/s for the speed of sound)

Which of the following is the result of the nuclear weak force? the instability of large nuclei the repelling force between positively charged protons the structure of the atom certain types of nuclear decay

If gases like carbon dioxide and methane make up less than 1% of the total atmosphere, why is it important for scientists to monitor changes in percentages of these gases?

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.