An earthquake 45 km from a city produces p and s waves that travel outward at 5000 m/s and 3000 m/s, respectively. once city residents feel the shaking of the p wave, how much time do they have before the s wave arrives in seconds?

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.