Which tool would be most useful for distinguishing laser light from sunlight? a.) prism
b.) spherical mirror
c.) flat mirror
d.) thermometer

Rohit is trying to tune an instrument

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

Estimate of the number of stars in our galaxy