Is the angular size of the moon always big enough to cover up the sun during an eclipse?

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?

At what time will the interfering waves have an amplitudeof zero?

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?