An airplane starts from a and flies to b at a constant speed. after reaching b it returns to a at the same speed. there was no wind. assuming there was a wind from a to b of constant magnitude, when will the round trip take more time – when there is a wind or when there is no wind?

What is the role of the ocular lens?

Calculate the work done by an external agent during an isothermal compression of 1.00 mol of oxygen from a volume of 22.4 l at 10∘c and 1.0 atm pressure to 16.8l

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?