What scientific practice is this? 1)collecting data 2)asking a question 3)providing explanations 4)communicating results

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Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.