Johnny is pulling a 15 kg box on carpet to the right. If the coefficient of friction of the carpet is m=0.3. What is the frictional force exerted on the box by the carpet?
a
45 N
b
-4.5 N
С
-45 N
d
4.5 N

answer; a. neither end of earth's axis is tilted toward or away from the sun .is your correct answer;

- measure reactants precisely. ( first choice)

- stir to the reaction take place. ( second choice)

- wait patiently until the reaction completes. ( fourth choice)

- make sure to recover as much copper as possible. ( last choice)

chemical properties of thing

answer: good job it's all correct !

explanation: