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3 years ago

.. An object has a mass of 40 000 kilograms

Physics

1 answer:

alexgriva [62]3 years ago

6 0

Answer:

8000 kg/cm^3

Explanation:

The density formula is P = M/V

Density = P = ? expressed in kg/m^3

M = mass = 40,000 kg

V = volume = 5 m^3

P = 40,000/5

P = 8000 kg/m^3

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Answer:

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Explanation:

Given that,

Length = 1000 m

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Summer temperature = 40°C

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$\Delta L=L\alpha\Delta T$

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Put the value into the formula

$\Delta L=1000\times10.5\times10^{-6}(40^{\circ}-0^{\circ})$

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3 years ago

A car travels up a hill at a constant speed of 38 km/h and returns down the hill at a constant speed of 66 km/h. Calculate the a

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Answer:

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The refractive index is given by n= $\frac{c}{v}$

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3 years ago

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Answer:

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3 years ago

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