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liberstina [14]
2 years ago
9

Which sentence best explains the law of conservation of mass as applied to

Physics
1 answer:
drek231 [11]2 years ago
3 0

Answer:

A. The amount of mass changes only slightly during a chemical

reaction.

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2 years ago
Find the final velocity
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Answer: v = 4.4 m/s

Explanation:

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A typical land snail's speed is 12.2 meters per hour. How many miles will the snail travel in one day(24hrs)?
algol13
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2 years ago
A rock has a specific gravity of 2.32 and a volume of 8.64 in3 how much does it weigh
lianna [129]

Answer: 3.21 N

Specific\hspace{1mm} gravity = \frac {Density\hspace{1mm}of\hspace{1mm}substance}{Density\hspace{1mm} of \hspace{1mm}water}

\Rightarrow Density \hspace{1mm}of\hspace{1mm}substance= 2.32\times 1000\hspace{1mm} kg/m^3 = 2320\hspace{1mm}kg/m^3\\ Mass =Density\times volume\\ \Rightarrow 2320 \hspace{1mm} kg/m^3\times 8.64 \hspace{1mm}in^3\times \frac {1.64\times10^{-5} m^3}{1\hspace{1mm}in^3}=0.328 kg

For weight, we will multiply by g=9.8 m/s^{-2}

weight= 0.328\times9.8=3.21\hspace{1mm}N

Hence, the rock would weigh 3.21 N.

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2 years ago
A pulley is most closely related to which simple machine?
MrRissso [65]

Answer: wheel and axle

Explanation:

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3 years ago
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