What is the wave speed if the frequency is 50 Hz and the wavelength is 4
m?

Aristotle thought so every portion of the earth tends toward the center until by compression and convergence they form a sphere. travelers going south see southern constellations rise higher above the horizon.~ hope this !

Hello,the first women to become a astronaut was  valentina tereshkova, but she never land the  moon : dhope this -hottwizzlers

Include the fact that greenland has history behind its discovery and it was discovered by a viking named leif erikson. he named it greenland because he wanted to make people move there instead of staying in iceland. greenland is perfect for people who like cold weather. comparing this to the u.s, it has very different climate. in the u.s we have seasons while in greenland the tempature stays the same.     what kind of items were found at a public square in temixtitlan
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