Question

petrol?
17. A certain process requires that room Temperature be lowered from 40°C at the Rate of 5°C
every hour. What will be the room temperature 10 hours after the Process begins?​

Answer 1

☯ Initial temperature is 40° C.

☯ Rate of change in temperature is 5° C/hour

☯ Time is 10 hours

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• So, in 10 hours the temperature would be decreased by -

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$\:\:\:\:\:\:\:\::\:\Longrightarrow\sf\:{10\:\times\:5}$

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$\:\:\:\:\:\:\:\::\:\Longrightarrow\sf\:{50°\:C}$

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• Therefore, the final temperature :

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$\:\:\:\:\:\:\:\::\:\Longrightarrow\sf\:{40\:-\:50}$

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$\:\:\:\:\:\:\:\::\:\Longrightarrow\:{\underline{\boxed{\frak{\pink{-10°C}}}}}\:\bigstar$

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$\:\:\:\:\therefore\:{\underline{\sf{The\:Room\:temperatue\:is\:{\textsf{\textbf{-10°C}}}}}}.$

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Answer 2

Answer:

☯ Initial temperature is 40° C.

☯ Rate of change in temperature is 5° C/hour

☯ Time is 10 hours

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So, in 10 hours the temperature would be decreased by -

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\:\:\:\:\:\:\:\::\:\Longrightarrow\sf\:{10\:\times\:5}:⟹10×5

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\:\:\:\:\:\:\:\::\:\Longrightarrow\sf\:{50°\:C}:⟹50°C

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Therefore, the final temperature :

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\:\:\:\:\:\:\:\::\:\Longrightarrow\sf\:{40\:-\:50}:⟹40−50

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\:\:\:\:\:\:\:\::\:\Longrightarrow\:{\underline{\boxed{\frak{\pink{-10°C}}}}}\:\bigstar:⟹

−10°C

★

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\:\:\:\:\therefore\:{\underline{\sf{The\:Room\:temperatue\:is\:{\textsf{\textbf{-10°C}}}}}}.∴

TheRoomtemperatueis-10°C

.

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