A certain freezing process requires that the temperature be lowered from 300 C at the rate of 30 C every hour. What will be temperature after 8 hours?- grade 7
Answers
Answer:
temp. after 8 hours = 60°C
Explanation:
temperature reduced in 1 hour = 30°
temperature reduced after 8 hours =8 x 30
= 240°C
total temperature =300° - 240°
= 60°C
Answer: If a certain freezing process requires that room temperature be lowered from 40 degree Celsius at rate of 5 degree celsius every hour, the room temperature 10 hours after the process begins will be -10 degrees Celcius
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Explanation:
The initial temperature of the room = 40 degrees Celcius
Rate of decrease in temperature = 5 degree Celcius per hour
Time after which temperature is recorded = 10 hours
The final temperature of the room = Initial temperature - rate × time [Since the temperature is lowering every hour]
Final temperature = 40 - 5 × 10
Final temperature = - 10 degree Celcius.