18. How much work does a 1000 W motor do in 5.0 min if it has an
efficiency of 80%?

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

How to calculate voltage drop in a series circuit

Ne way in which elements differ from each other is the structure of the electron cloud in each element's atoms. in an electron cloud, an electron that is farther away from the nucleus has