You are trying to bring a pot of water to a boil, to boil someeggs. To use the l

Question

You are trying to bring a pot of water to a boil, to boil someeggs. To use the least amount of gas, do the following.

A)Turn the flame on high.
B)Turn the flame on low.
C)Turn the flame on a medium setting. Hint: You want to raise the temperature of the water to 100 deg C tobring it to a boil. That takes a certain amount ofenergy. While the water temperature is increasing and itstemperature is higher than that of the environment, it loosesenergy to the environment. The rate of loss dE/dt isproportional to the temperature difference delta T. The amountof energy lost at a certain temperature therefore is proportionalto delta T times delta t, the time the water was at thattemperature. Shortening the time it takes to bring the waterto a boil will minimize energy loss to the environment.

A)Turn the flame on high.
B)Turn the flame on low.
C)Turn the flame on a medium setting. Hint: You want to raise the temperature of the water to 100 deg C tobring it to a boil. That takes a certain amount ofenergy. While the water temperature is increasing and itstemperature is higher than that of the environment, it loosesenergy to the environment. The rate of loss dE/dt isproportional to the temperature difference delta T. The amountof energy lost at a certain temperature therefore is proportionalto delta T times delta t, the time the water was at thattemperature. Shortening the time it takes to bring the waterto a boil will minimize energy loss to the environment.
Hint: You want to raise the temperature of the water to 100 deg C tobring it to a boil. That takes a certain amount ofenergy. While the water temperature is increasing and itstemperature is higher than that of the environment, it loosesenergy to the environment. The rate of loss dE/dt isproportional to the temperature difference delta T. The amountof energy lost at a certain temperature therefore is proportionalto delta T times delta t, the time the water was at thattemperature. Shortening the time it takes to bring the waterto a boil will minimize energy loss to the environment.

Explanation / Answer

A)Turn the flame onhigh.
B)Turn the flame on low.
C)Turn the flame on a medium setting.
option A is correct Hint: You want to raise the temperature of the water to 100 deg C tobring it to a boil. That takes a certain amount ofenergy. While the water temperature is increasing and itstemperature is higher than that of the environment, it loosesenergy to the environment. The rate of loss dE/dt isproportional to the temperature difference delta T. The amountof energy lost at a certain temperature therefore is proportionalto delta T times delta t, the time the water was at thattemperature. Shortening the time it takes to bring the waterto a boil will minimize energy loss to the environment. Hint: You want to raise the temperature of the water to 100 deg C tobring it to a boil. That takes a certain amount ofenergy. While the water temperature is increasing and itstemperature is higher than that of the environment, it loosesenergy to the environment. The rate of loss dE/dt isproportional to the temperature difference delta T. The amountof energy lost at a certain temperature therefore is proportionalto delta T times delta t, the time the water was at thattemperature. Shortening the time it takes to bring the waterto a boil will minimize energy loss to the environment.

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