You are pulling your little sister on her sled across an icy (frictionless) surface. When you exert a constant horizontal force of 120 N , the sled has an acceleration of 2.3 m/s2 . Part A If the sled has a mass of 8.0 kg , what is the mass of your little sister

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Time remainin52: 42the chart shows data for a moving object. which conclusion is best supported by the information inthe chart? time (s)velocity (m/s

The two required components for a generator