Aweightlifter lifts a 250-kg mass 0.5 meters above his head, how much peg does the mass have (note: g=9.8 m/s2)?

Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

70 give a real life example showing how sensory neurons work with the motor neurons