Please answer the max normal stress along the x direction and the max shear stress

Determine the maximum normal stress along the $x$ direction in the aluminum ball at the surface.

Express your answer to three significant figures and include the appropriate units.

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Part G

Determine the maximum normal stress along the $y$ direction in the aluminum ball at the surface.

Express your answer to three significant figures and include the appropriate units.

Part H

Determine the maximum shear stress in the steel ball below the surface.

Express your answer to three significant figures and include the appropriate units.

${}_{yz}$ max steel $=$

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Part I

Determine the maximum shear stress in the aluminum ball below the surface.

Express your answer to three significant figures and include the appropriate units.