When a Container of Water Is Placed on a Laboratory $\text { (of density } 8.9 \mathrm {~g} / \mathrm { cm } ^ { 3 } \text { ) }$

question 74

Multiple Choice

When a container of water is placed on a laboratory scale, the scale reads 120 g. Now a 20-g piece of copper $\text { (of density } 8.9 \mathrm {~g} / \mathrm { cm } ^ { 3 } \text { ) }$
is suspended from a thread and lowered into the water, not touching the bottom of the container. What will the scale now read? The density of water is 1.0 $\mathrm { g } / \mathrm { cm } ^ { 3 }$

• A) 120 g
• B) 138 g
• C) 122 g
• D) 140 g

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