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BARSIC [14]
3 years ago
8

An iceberg at its melting point

Physics
1 answer:
iren2701 [21]3 years ago
5 0

The mass of the iceberg is 71.9 kg

Explanation:

The amount of thermal energy needed to completely melt a substance at its melting point is given by

Q=\lambda m

where

\lambda is the latent heat of fusion

m is the mass of the substance

In this problem, we have a block of ice at its melting point (zero degrees). The amount of heat given to the block is

Q=2.40\cdot 10^7 J

And the latent heat of fusion of ice is

\lambda = 334 J/g

So, we can re-arrange the equation to find m, the amount of ice that will melt:

m=\frac{Q}{\lambda}=\frac{2.40\cdot 10^7}{334}=71856 g = 71.9 kg

Learn more about specific heat:

brainly.com/question/3032746

brainly.com/question/4759369

#LearnwithBrainly

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A train has an initial velocity of 44m/s and an accelaration of _4m/s calculate its velocity​
Kobotan [32]

Complete question:

A train has an initial velocity of 44m/s and an acceleration of -4m/s². calculate its velocity​ after 10s ?

Answer:

the final velocity of the train is 4 m/s.

Explanation:

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hope this helps

have a good day :)

Explanation:

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