Physics describes things

(a) only in the very largest scales of galaxies and the universe
(b) only in the very smallest scales of atoms and quarks
(c) at all scales from large to small and everything in between
(d) only in terms of complex equations

Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) sketch the trajectory using an appropriate coordination system. b) how long for the projectile to reach the ground. c) how far did projectile travel horizontally before striking the ground. d) determine the projectilex & y position at t-1.3s e) determine the magnitude and direction of projectile velocity at t= 1.3s f) determine the magnitude and direction of projectile acceleration at t-1.3s

Give an example in which the electrical energy changes to light energy

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?