Direction of wind: from to​

What is the period of a wave traveling 5 m/s if its wavelength is 20 m/s

Tara goes on a camel safari in africa. she travels 5 km north, then 3 km east and then 1 km north again. what distance did she cover? what was her displacement?

The standard cell potential (e°cell) for the reaction below is +0.63 v. the cell potential for this reaction is when the concentration of zn2+ = 1.0 m and the concentration of pb2+ = 2.0 x 10-4 m. pb2+(aq) + zn(s) > zn2+(aq) + pb(s)