If a force of 250 N acts on a lawn roller at an angle of 30 degrees with horizontal, then the vertical component of the force is 216.5 N true or false

How can you improve the percent yield of copper in this lab? check all possible strategies that will you do so. measure reactants precisely. stir to the reaction take place. chill the reactants before combining them. wait patiently until the reaction completes. make sure to recover as much copper as possible.