HELP ME PLS when your sence becomes sharper what is that
a. respitory system
b. circulatery system
c. nervouse system
d. muskeler and skeletal system

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules

Use 4 to 5 complete sentences, explain the concepts of beats and how beats are produces.