The metal wire in an incandescent lightbulb glows when the light is switched on and stops glowing when it is switched off. this simple process is which kind of a change? a. a physical change b. a chemical change c. a nuclear change d. an ionic change

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

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 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.