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Valentin [98]
3 years ago
7

two identical eggs are dropped from the same height. The first eggs lands on a dish and breaks, while the second lands on a pill

ow and does not break. Which quantities are the same in both situations
Physics
1 answer:
Nataly_w [17]3 years ago
5 0

Answer:

The height is the same

Explanation:

Because they were at the same height but they fell at different velocities

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If The density of this stainless steel is7.85 g/cm3,specific heatis 0.5 J/g.K, melting pointis 1673K, heat of fusion s0.260J/kg.
kodGreya [7K]

Answer:

\Delta H=687.4 J

Explanation:

Hello!

In this case, for this melting process, we can identify two sub-processes in order to take the stainless steel from solid to liquid:

1. Heat up from 298.15 K to 1673 K.

2. Undergo the phase transition.

Both process have an associated enthalpy as shown below:

\Delta H_1=1g*0.5\frac{J}{g*K} (1673K-298.15K)=687.4J

\Delta H_2=0.001kg*\frac{0.260J}{kg} =0.00026J

Therefore, the required heat is:

\Delta H=\Delta H_1+\Delta H_2\\\\\Delta H=687.4J+0.00026J\\\\\Delta H=687.4J

Notice the problem is not providing neither the mass or volume, that is why we assumed the mass is 1 g; however, it can be changed to the mass you are given.

Best regards!

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There is too much information given, it's hard to understand exactly which variables are important in this problem. 
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