Trent and Lincoln were conducting an experiment that involved sending sound waves through different materials. They discovered that there was a pattern. What can change the speed of sound through a material? Choose two that apply. Mass
Temp
Length
Width
Density

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

There are two routes similar in terrain; however, one route has an incline of approximately 28 degrees, and you must decide on which route to take. what is the maximum road grade that your fully loaded ecv can climb?