An object at the end of a rope has a centripetal acceleration of 145m/s and the length of the is 0.34 m what is the tangential velocity of the object

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b. refraction c. diffraction d. interference

Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving

Anew product is designed to make plants grow faster. twenty plants are fed the new product and twenty plants are used as a control group. which possible issue might cause an unavoidable error in the study?