calculati lucrul mecanic efectuat de forta F vectorial , aplicata unui solid ce se deplaseaza rectiliniu ,pe o distanta egala cu delta x=10 m . Forta are modulul de 20 N si directia ei se formeaza cu directia deplasarii unghiului alfa egal cu : 0,60 , 90 ,120,180 .Cand se efectueaza lucrul mecanic motor si cand se efectueaza lucrul mecanic rezistent?

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

The mini-refrigerator fire was most likely caused by what type of wiring?

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.