Compressions are regions of high pressure due to particles being close together
rarefactions are regions of low pressure due to particles being spread further apart
Longitudinal waves are often demonstrated by pushing and pulling a stretched slinky spring
Answer:
There are many properties that differentiate metals from non-metals. They are: Luster, conductivity of heat and electricity, physical strength i.e. Brittle or difficult to break, etc.
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Isotopes have the same number of protons so they both have 17 and a different amount of neutrons which is why the mass number is different
Answer:
a force of friction would be like something moving that suddenly stops because of the texture of another object while a force of gravity would be something falling and gravity pulling it down :) hope this helps
Explanation:
