I literally can't I just can't Find how much thermal energy must be added to 200.0 g of iron to increase its temperature by 12 °C.

I'LL GIVE BRAINLIEST

Explanation:

Specific heat capacity is given by , where is thermal energy, is the mass of the substance, is the specific capacity, and is change in temperature.

What we know:

*When solving, make sure to convert all units into their respective SI units

Substituting known values, we get:

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speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.