45 2.0
2. how many joules of heat are needed to raise the temperature of 048 kg of aluminum from 21°c to
94°c, if the specific heat of aluminum is 900 j/g °c?

The answer to your question is: Q = 3153600 Joules

Explanation:

Data

Q = ?

m = 48 kg

T1 = 21°C

T2 = 94°C

Cp = 900 J/g°C

Formula

Q = mCpΔT

Q = (48)(900)(94 - 21) = 3153600 Joules

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

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