In order to improve the condition of your muscular system, you could participate in aerobic activity at least a. 3 minutes 5 times a week b. 10 minutes 4 times a week c. 30 minutes 3 times a week d. 50 minutes 3 times a week select the best answer from the choices provided. a b c d

Can someone me with questions 12 and 13 plz.

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here