Density = mass / volume = 7/14 = 0.5!g/cm^3
Take the 72 g and divid it by 6 which would equal 12 g each
The vibrations created by noise can be converted to electrical energy through the principle of magnetic Induction, for example by using transducer.
B- lack of control.
the scientists did not have a proper control group.
Answer:

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:


Therefore, the required heat is:

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.
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