The coefficient of sliding friction between a 4.5 kilograms school bag with rollers and the concrete pavement is 0.05 what horizontal force is needed to put the.​

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

Anitrogen atom and an oxygen atom combine chemically to form nitric oxide. what is nitric oxide?