If the period of a certain wave (wavelength = 4.5 m) is 2 seconds, what is the speed of the wave? 0.44 m/s
1.1 m/s
9.0 m/s
2.3 m/s

What sort of waves exhibit the doppler effect?

How does the entropy of steam compare to the entropy of ice?

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