A82.1 kg person stands on a scale. what normal force does the scale exert on him ? (unit =n)

805.4 N

Explanation:

Force = mass × acceleration

F = 82.1kg × acceleration due to gravity which depending on your level will be either 10 or more accurately, 9.81

F= 82.1kg × 9.81

F = 805.4 N

the expression 15n + 2(3p) represents the amount isaiah spent buying gasoline and snacks, where n represents the price of each gallon of gasoline and p represents the cost of each snack that he bought. which statement is true about the amount isaiah spent?

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.