# Physics

A faulty celcius thermometer read 0.7 degree celcius at the melting point of pure ice and 99.5 at the boiling point of water at normal pressure.
Calculate the correct temperature when it reads 30 degree celcius.
At what temperature will its reading be exactly correct

1. 👍 1
2. 👎 0
3. 👁 844
1. 99.5-.7 = 98.8

so
Reading C = Cr = .7 +(98.8/100) C

if Cr = 30
30 = .7 + .988 C
C = 29.7

if the same
C = .7 + .988 C
.012 C = .7
C = 58.3 degrees C or Cr

1. 👍 1
2. 👎 1
2. physics

1. 👍 0
2. 👎 0

1. 👍 0
2. 👎 0

## Similar Questions

1. ### physics

In lab you submerge 100 g of 41 degree Celcius iron nails in 100 g of 25 degree Celcius water (the specific heat of iron is 0.12 cal/g degrees Celcius) A)Equate the heat gained by the water to the heat lost by the nails and find

2. ### Science

An alumium rod when measured with a steel scale both being at 25 degree celcius appears to be 1 meter long. If the scale is correct at 0 degree celcius, what is the true length of the rod at 25 degree celcius? What wull be the

3. ### physics

calculate the heat energy needed to convert 2kg of ice at -12 degree celcius to steam at 100 degree celcius. specific heat capacity for ice=2100j/kg K specific latent heat of ice=340000 J/kg specific latent heat for steam

4. ### Chemistry

The specific heat capacity of a metal is given as 0.745 J/ degree Celcius.What mass of the metal must be heated to 95 degree Celcius in order to be used to warm 2.548 L of water from 18.1 degree Celcius to 22.5 degree Celcius ?

1. ### chemistry HELP

A 46.2 gram sample of copper is heated to 95.4 degrees celcius and then place into a calorimeter containing 75.0 grams of water at 19.6 degrees celcius. The final temp of the water and copper is 21.8 degrees celcius. Calculate the

A 34 g glass thermometer reads 21.6°C before it is placed in 135 mL of water. When the water and thermometer come to equilibrium, the thermometer reads 38.7°C. What was the original temperature of the water?

3. ### physics

a cylinder of diameter 1cm at 30degree celcius is to slid into a hole on a steel plate. the hole has a diameter of 0.9997 cm at 30 degree celcius. to what temperature must be the plate be heated when steel has the alpha

4. ### physics

how much would you have to raise the temperature of a copper wire(originally at 20degree celcius) to increase its resistance by 15%? express your answer in percentage.note a=0.0068per degree celcius

1. ### Chemistry

How many joules of heat are needed to heat 25.0 g of ice at -5.0 degrees celcius to a final temperature of 40.0 degrees celcius? The specific heat of ice is 2.1 j. Our teacher mention to consider the state of water present at 40.0

2. ### Chemistry

How much heat is required to melt 75.5g of ice at -25 degrees Celcius, and convert it to steam at 105 Celcius

3. ### physics

The ice point of an ungraduated mercury in glass thermometer is x while it stem point is 90°This thermometer read 60°when the true tempetature is 40°c calculate the value of x?

4. ### science

if a thermometer contained a gram of mercury, how much would the volume of the mercury change when the temperature rose from 0 degrees celcius to 30 degrees celcius?