A mercury-in-glass thermometer read 4cm at ice point and 29cm at steam point. Calculate the temperature when the mercury level is at 9cm

JThomson

7 years ago

[(9-4)/(29-4)]×100
(5/25)×100
100/5
20°C

Clifford005

4 years ago

(9-4)÷(29-4) ×100
5÷25 ×100
500÷25=20°C

imfynest

2 months ago

1. Identify given parameters
The thermometer uses a linear relationship between the length of the mercury column (
) and the temperature (
). We are given the following fixed points:
Ice point (


):


Steam point (


):


Unknown point (
):


2. Apply the linear interpolation formula
The temperature on a Celsius scale for a liquid-in-glass thermometer is determined by the ratio of the increase in length to the total interval between fixed points:

3. Substitute values and solve
Substitute the known lengths into the equation:

Ibrahim fatimoh

9 years ago

Explaination pls