Upwelling currents are cause by: o temperature differences between water masses
o salinity differences between water masses
O pressure differences between water masses
o Ekman spiral

Ball b is hanging from an inextensible cord. an identical ball a is released from rest when it is just touching the cord and drops through the vertical distance h a 5 8 in. before striking ball b. assuming e 5 0.9 and no friction, determine the resulting maximum vertical displacement h b of the ball b

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Gunpowder residue is most likely to show up where on a shooters hands