A bike is moving north when the rider applies the brakes. In which direction does the frictional force act between the ground and the bike's wheels?

A.
north

B.
south

C.
upward

D.
downward

Which best describes how johannes kepler developed his laws of planetary motion

Calculate: select the worksheet tab. this tab you calculate the analyte concentration.  fill in the first set of boxes ("moles h2so4" and "moles naoh") based on the coefficients in the balanced equation. (if there is no coefficient, the value is 1.)  record the appropriate volumes in the "ml naoh" and "ml h2so4" boxes.  record the concentration of the titrant in the m naoh box. click calculate. what is the concentration listed

Why do cells appear different in distilled water than they do in 10% salt water?