A lawn mower is being pushed at constant velocity through the grass If the force applied to the handle is 80N at 30° to the ground, determine the components of the force vector. Please answer fast!!

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

Ineed the answers for these promblems i have

This is the substance(s) formed in a chemical reaction.