How can you determine that a coin is not pure silver if you known the mass and volume of the coin?

By measuring its density which should come out to be at

Step-by-step explanation:

Density is defined as the mass contained per unit volume.

Density of a substance is an intensive property and it does not depend on the amount of matter contained in the substance. It is specific of a compound and thus can be used to know the purity of substances.

Density of silver is at .

Thus if density comes out to be different from the standard value , it means the silver is impure.

answer

see attachment

explanation

the given function is

this function has y-intercept at

-4 and a slope of 2.

note that, the graph has a positive slope.

the graph that represents this function is the straight line that moves upward from left to right.

the graph touches the y-axis at -4.

the correct choice is the graph shown in the attachment.

38.6°

step-by-step explanation:

resultant is 10 pound

smaller force = 8 pound

angle formed = tan⁻¹(

                        =tan⁻¹(

                          =tan⁻¹(0.8)

                        =38.6°