How to Calculate the Surface Area for Nickel Plating with Given Parameters?

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To calculate the surface area for nickel plating, start with the formula relating mass, area, and thickness. The electrochemical equivalent of nickel is 0.305 mg/C, which indicates the mass of nickel deposited per unit charge. Given a current of 12.4 Amps and a plating time of three and a half hours, convert these values into appropriate units for the calculation. The density of nickel at 8778 kg/m^3 will also be necessary to determine the volume of nickel required. Following these steps will allow for the accurate calculation of the surface area that can be plated.
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1.A plate is to be nickel-plated to a thickness of 0.15mm in three and a half hours. The electrochemical equivalent of nickel is 0.305mg/C and the density of nickel is 8778kg/m^3 .Calculate the surface area of the plate that can be plated to the specified thickness with current of 12.4Amps.

Ok soo " m=zIt " would only get me soo far and I really don't have a clue even in which UNITS this must first go to.My Book is extremely vague on the matter and don't know what you would call this on google :(
 
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Totter said:
1.A plate is to be nickel-plated to a thickness of 0.15mm in three and a half hours. The electrochemical equivalent of nickel is 0.305mg/C and the density of nickel is 8778kg/m^3 .Calculate the surface area of the plate that can be plated to the specified thickness with current of 12.4Amps.

Ok soo " m=zIt " would only get me soo far and I really don't have a clue even in which UNITS this must first go to.My Book is extremely vague on the matter and don't know what you would call this on google :(

Hi Totter, Welcome to Physics Forums.

Go step by step and see if you can work out what's required and whether or not the information is provided.

First write a formula that relates the required mass of nickel given plate area and thickness of the coating.

Next look at the given " electrochemical equivalent of nickel is 0.305mg/C". What do you suppose the units are telling you?
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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