Physics, 22.10.2019 21:00 myloorie

What mass of water is required to absorb 4.7 x 10^5 of energy from a car engine while the temperature was initially 25 what will be the new temperature

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Answer from: annjetero2oy23ay

The mass of water required is, m = 1.492 Kg

The final temperature of water, $T_{f}$ = 100 °C

Explanation:

Given that

Energy absorbed by water, q = 4.5 x 10⁵ J

The initial temperature of water $T_{i}$ = 25 °C

The mass of water required to absorb the energy, m = ?

The final temperature of water, $T_{f}$ = ?

The formula for energy absorbed by the water,

q = m C ΔT Joules

where,

C - specific heat capacity (4200 J/Kg °C)

ΔT = $T_{f}$ - $T_{i}$ (change in temperature)

The maximum possible temperature of the water at Standard Temperature and Pressure is 100 °C

As the final temperature is not given, let us consider the maximum possible temperature of the water.

Therefore,

ΔT = $T_{f}$ - $T_{i}$

= 100 -25

= 75 °C

To find the mass of water, from the above relation

m = q/CΔT Kg

Substituting the values in the above equation

m = 4.5 x 10⁵/4200 x 75

m = 1.492 Kg

Hence, the mass of water required is m = 1.492 Kg

Answer from: Quest

i don't understand is there any other way you can rephrase it plz let me know in the comments and i will do it.

explanation:

Answer from: Quest

Iread this book last year so take this with a grain of salt.gene jumps from the tree to compete with finny due to the fact that gene is always trying to do better than finny. he is put under the grasp of peer pressure due to finny almost forcing him to do this. ever since he first jumped finny kept pressuring him to jump since he thought gene enjoyed jumping.rather than uses this answer you should probably just reread chapters 3-4

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