How long does it take a car to cross a 20m bridge if it starts from rest and accelerates at 5 m/s^2? 2s
1.89s
1.41s
1.41 m
2.8s

Dry ice is solid carbon dioxide that is used in the transport of food and medicine. dry ice becomes a gas at –78.5°c without becoming a liquid first.

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.