Which Beaker Has a Higher Temperature After Heating by 15°F and 15°K?

[kimkibun]

Homework Statement

2 beakers of water, A and B, initially are at the same temperature. the temperature of the water in A is increased 15°F while at B it increased 15°K. after these temperature changes, which beaker of water has the higher temperature and by how much in °C?

Homework Equations

I will use the following conversion formulas for °C

°C=(°F-32)/1.8 (i)

°C=°K-273 (ii)

The Attempt at a Solution

Here's my solution, I'm going to convert the temperature of water beaker A to °C using (i) and for beaker B i will use (ii). is my solution correct?

 

[PeterO]

Homework Statement

2 beakers of water, A and B, initially are at the same temperature. the temperature of the water in A is increased 15°F while at B it increased 15°K. after these temperature changes, which beaker of water has the higher temperature and by how much in °C?

Homework Equations

I will use the following conversion formulas for °C

°C=(°F-32)/1.8 (i)

°C=°K-273 (ii)

The Attempt at a Solution

Here's my solution, I'm going to convert the temperature of water beaker A to °C using (i) and for beaker B i will use (ii). is my solution correct?

The idea of converting the temperatures to celsius is admirable, but you don't know either temperature, only by how much they changed.

I don't think there is a suggestion that one beaker starts at 15°F while the other starts at 15°K.

Perhaps they both started at 20°C - because they did start at the same temperature.

 

[kimkibun]

The idea of converting the temperatures to celsius is admirable, but you don't know either temperature, only by how much they changed.

I don't think there is a suggestion that one beaker starts at 15°F while the other starts at 15°K.

Perhaps they both started at 20°C - because they did start at the same temperature.

thanks for the reply sir! i think, knowing the initial temperature of two beakers is not necessary since what we need to compare is their temperature (in °C) after the said changes.

 

[PeterO]

thanks for the reply sir! i think, knowing the initial temperature of two beakers is not necessary since what we need to compare is their temperature (in °C) after the said changes.

That is correct, but you were quoting formulas for converting actual temperatures, not converting changes in temperature.