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3 years ago

To find an object’s density (D), first measure its mass (m) and volume (V). Then use the following equation:

Mathematics

1 answer:

Mariana [72]3 years ago

7 0

Answer:

C. 20 cm^3

Step-by-step explanation:

Using the equation D=m/v, you would plug in the given mass (227 g) into m and the given density of lead (11.35 g/cm^3). Solving for v=m/D, we find the answer to be 20 cm^3.

Also, you could cancel out all the answers except C because it is the only one in units of volume (1 cm^3 = 1 mL).

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The rate of current is 2.5 mph.

Step-by-step explanation:

The speed in the water when current is absent is 9 mph.

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Now, it takes 5 hours longer to travel 74 miles upstream than down stream, then we can write the equation as

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Applying Sridhar Acharya's formula we can write

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