Square metal plates having a total exposed area of 10.75 ft . 2 are fastened together with rivets having a total exposed area of 15.5 in . 2 The environment involves moisture and some salt. Consider two cases: (1) iron plates with nickel–copper alloy rivets, and (2) nickel–copper alloy plates with iron rivets. For each case, which metal will corrode? How do the rates of corrosion compare for the two cases? If half as many rivets were used, what influence would this have on the total rate of corrosion?

answer:

the answer is d

explanation:

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

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