Is the formation of rust on an iron nail a chemical change or a physical change? Explain your answer.

Which of the following scenarios would create the most friction between the two surfaces? A.) a shoe with a rubber sole moving against a smooth tile floor B.) a shoe with a wooden sole moving against a smooth tile floor C.

What are two things you do ahead of time to prepare for a lab

How much water does it take to produce one bottle of water?

A fixed electric space heater wired by a cable with an ampacity of 30 A should draw a maximum current of A. 30 A. B. 24 A. C. 15 A. D. 27 A.

An eagle carries a fish up 50 m into the sky using 90 n of force. how much work did the eagle do on the fish

An archer aims an arrow and then pulls back on the bow string and bends the bow. which describes the relationship of potential and kinetic energy in this case? a.

A Revolução Industrial, que iniciou na Inglaterra, promoveu um grande avanço para o processo de industrialização, que se expandiu para todo o mundo. Porém, causou também prejuízos. O que é correto afirmar sobre esses prejuízos?

You push against a steamer trunk with a force of 750 N at an angle of 25° with the horizontal. The trunk is on a flat floor and the coefficient of static friction between the trunk and floor is 0.77.

How does an electric field change due to voltage?

Voltage can exist without A. current. B. resistance. C. a closed circuit. D. all of these