Which of the following has the greatest impulse? Which has the greatest momentum? a. A 6000 kg elephant charging at a constant velocity of 11 m/s.
b. A 200 gram bullet fired from rest to 300 m/s.
c. A 18,000 kg fire truck parked on the street.

Imagine you had to physically add electrons, one at a time, to a previously neutral conductor. you add one electron very easily, but the second electron requires more work. in your initial post to the discussion, explain why this is. also, what happens to the work needed to add the third, fourth, fifth, and subsequent electrons

Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). heavier cars tend to have lower fuel efficiencies (lower mpg ratings). which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context?

Which type of basaltic lava flow has a fairly smooth