If a book has a a mass of 2 kg, how much does the book weigh? Group of answer choices
A. 20 N
B. 19 N
C. 21 N
D. 22 N

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

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?

If the textbook weighs 19.6 newtons on venus, what is the strength of gravity on venus?