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Daniel [21]
2 years ago
4

Calculate the density of rock that weights 14.5 kg and has a volume of 141 cm3 . Express your answer in g/cm3 .

Physics
1 answer:
Degger [83]2 years ago
6 0

Answer: 102.83 g/cm³

Explanation:

Density = Mass/ Volume

Mass = 14.5kg

Volume = 141cm³

The answer is to be in g/cm³ so, convert 14.5kg to gram

1000g = 1kg

X = 14.5kg.

Now x = 14,500g

So we have mass as 14,500g

Recall that density = mass/volume, now you can plug your parameters

D = 14,500/141

102.83 g/cm³//

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skelet666 [1.2K]

Answer:

So the acceleration of the child will be 8.05m/sec^2

Explanation:

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Angular acceleration \alpha =0.745rad/sec^2

We know that linear velocity is given by v=\omega r=1.25\times 4.65=5.815m/sec

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2 years ago
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4 0
2 years ago
Scientists studying an anomalous magnetic field find that it is inducing a circular electric field in a plane perpendicular to t
yarga [219]

Answer

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Explanation

From the question we are told that

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    The radius is  r =  1.5 \ m

The rate of change of the  magnetic  field  is mathematically represented as

        \frac{d \phi }{dt}  =  \int\limits^{} {E \cdot dl}

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Where A is the area which is mathematically represented as

     A = \pi r^2

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where L is the circumference of the circle which is mathematically represented as

     L = 2 \pi r

So

     E (2 \pi r ) =  (\pi r^2 ) [\frac{dB}{dt} ]

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substituting values

      [\frac{dB}{dt} ] = \frac{3.5 *10^{-3}}{ \frac{15}{2} }

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8 0
2 years ago
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Using the equation

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140 = 0 + 9.8 t

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Answer:

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