a cooling machine starts cooling the room at the rate of 5 degree celsius per hour. if the temprature of the room is 28 degree celsius. find the number of hours it take to lower down the room temprature to -7 degree celsius.
vanshikabhardwaj:
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T₁ = 28 °C
T₂ = -7 °C
ΔT = T₂ - T₁ = -7 - 28 = -35°
v = -5° / h
t = ΔT / v = -35° / -5° = 7 h
Answer: After 7 hours it becoms in the room -7 °C.
T₂ = -7 °C
ΔT = T₂ - T₁ = -7 - 28 = -35°
v = -5° / h
t = ΔT / v = -35° / -5° = 7 h
Answer: After 7 hours it becoms in the room -7 °C.
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Step-by-step explanation:
the real answer is 8 1/3 years sorry I can’t explain
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