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kvv77 [185]
3 years ago
14

An iron cube has edge 15cm long at 20c .What will be? The new surface area of a face when the temperature rises to 80c

Physics
1 answer:
grigory [225]3 years ago
3 0

Answer:

271cm^2

Explanation:

volume 1= 15^3 =3375

temp. 1. = 20+273 = 293

temp. 2. = 50+273 = 353

volume 2 =?

According to Charles law

volume is proportional to temperature

v2 = v1 * t2 / t1

v2 = 3375 * 353 / 293

v2 = 4066cm^3

v = area * length

4066 = area * 15

area = 4066/15 = 271cm^2

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