Which of the following is not true? the degree "symbol" is not used with the kelvin scale. a kelvin degree is the same size as a celsius degree. the kelvin temperature scale avoids use of negative numbers. water boils at the same temperature value on both the kelvin and celsius scales. none of the above

The "Water boils at the same temperature value on both the Kelvin and Celsius scales# statement is false

Explanation:

1.- The degree symbol is not used on the Kelvin scale because this is an absolute scale, the other scales are relative scales because they used reference points to measure temperature (as water boiling point)

2.- Both scales increases the same temperature as one degree increases.

3.- Kelvin scale doesn't count negative temperatures because it is an absolute scale, which means, the zero is absolute, the coldest temperature you can reach, at this point the molecules stop moving completely, nothing can be more stationary than something that is stopped.

4.- In kelvin water boils at 373, and int celsius at 100°, they are using different reference point to measure temperature

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

v=ir = 3x15 =45 v