8. The diagram below shows the shift in the spectrum for hydrogen light from several different sources, the universe. What is the best argument that can be made from this data?
More distant galaxies are moving toward us faster.
More distant galaxies are brighter.
More distant galaxies are not as bright.
More distant galaxies are moving away faster.

The car would move to the right with 150 n of force. the 150 n of force from friction and air resistance slows the car from moving to the right with 300 n of force.

The magnets are probably damaged or there not strong enough to attached to the refrigerator

If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2   where t1=temperature of cold reservoir ( ° k) = 135            t2=temperature of hot reservoir ( ° k)   = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58%  note: this is the theoretical maximum efficiency of a perfect heat engine.   real-life engines do not achieve this value.