What is the description of destructive interference between two light waves

The gravitational attraction between two objects will if one object acquires more mass .

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?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?