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Aleksandr [31]
3 years ago
12

A 10cm3 sample of copper has a density of 897g/cm3. What is the mass of the sample?

Physics
1 answer:
Sever21 [200]3 years ago
8 0
<h2><u>Question</u>:-</h2>

A 10cm³ sample of copper has a density of 897g/cm³. What is the mass of the sample ?

<h2><u>Answer</u>:-</h2>

<h3>Given:-</h3>

Density of sample of copper is 897g/cm³.

Volume of sample of copper is 10cm³.

<h3>To Find:-</h3>

The mass of the sample.

<h2>Solution:-</h2>

We know,

{ \boxed{\bf{\rm \red {Mass \: = \: Density \: × \: Volume}}}}

So, Mass = 897g/cm³ × 10cm³

Mass = 8970 g

<h3>The mass of the sample is <u>8</u><u>9</u><u>7</u><u>0</u><u> </u><u>g</u>. [Answer]</h3>
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A property unique to a conducting substance that determines its resistance is called:
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3 years ago
A 740-kg boulder is raised from a quarry 119 m deep by a long uniform chain having a mass of 550 kg . This chain is of uniform s
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Answer:

A) the maximum acceleration the boulder can have and still get out of the quarry

B) how long does it take to be lifted out at maximum acceleration if it started from rest

Explanation:

A)

let +y is upward. look below at the free body diagram. the mass M refers to the combined mass of the boulder and chain.

the weight of the chain is:   w_{c} =m_{c} g   and maximum tension is T=2.50 m_{c} g=1.41*10^4N

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M =m_{c}+ m_{b} =740kg+550kg=1290 kg

w_{M} =1.2650*10^4N

∑F_{y} =ma_{y}

T-M_{g} =Ma_{y}

a_{y} =(t-M_{g} )/M=(2.50m_{c} -M_{g} )/M=(2.50.550kg-1290kg)(9.8m/s^2)/1290kg

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B)

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using y-y_{0} =v_{oy} t+1/2(a_{y} )t^2

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3 years ago
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8 0
3 years ago
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