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Alborosie
3 years ago
8

How much thermal energy does it take to raise the temperature of 4.5 kg of

Physics
2 answers:
TEA [102]3 years ago
8 0

Answer: 640

Explanation:

A P E X

Romashka [77]3 years ago
3 0

The amount of thermal energy needed is 626.6 J

Explanation:

When a certain amount of heat energy Q is supplied to a substance, the temperature of the substance increases according to the equation

Q=mC_s \Delta T

where

m is the mass of the substance

C_s is the specific heat capacity of the substance

\Delta T is the change in temperature

In this problem,

m = 4.5 kg is the mass

C_s = 1.68 kJ/kg^{\circ} is the specific heat capacity of the substance

\Delta T = 97-12=85^{\circ}C is the change in temperature of the substance

Solving for Q,

Q=(4.5)(1.68)(85)=626.6 J

(Note that the substance cannot be water, since specific heat capacity of water is 4.18 kJ/kg^{\circ}C

Learn more about specific heat  capacity:

brainly.com/question/3032746

brainly.com/question/4759369

#LearnwithBrainly

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