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

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels.the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause,directly and indirectly, for such a rise in sea level is

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?

Three resistors are connected in series across a 15-v power supply. if the potential drops across resistors 1 and 2 are 4.1 volts and 3.1 volts, what is the exact potential drop (in volts) across resistor 3?