Select all that apply. The spectrum of Star B is compared to a reference hydrogen spectrum. What can be concluded about Star B? Star B is moving away from Earth. Star B is moving toward Earth. Star B may have transverse motion. Star B has no radial motion.

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

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?