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tweety1234
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Homework Statement
A scientist carries a thermometer, barometer, pan and gas camping stove up a mountain. At a certain point he collects water from a stream, boils it and measures the temperature of the steam condensing on the thermometer to be 98°C. What is the height of the column of mercury (density = 13560 kg m–3) in the barometer?b) Estimate the altitude of the scientist relative to sea level, assuming the density of air to be 1.186 kg m¬–3.
c)The scientist notices that it takes about 3 minutes to bring about 2 litres of water just to the boiling temperature. Assuming the thermal capacity of the water dominates (i.e. ignoring the thermal capacity of the pan), estimate the rate of heat transfer delivered by the camping stove to the pan of water.
I need help with part 'c', I have done parts 'a' and 'b'.
pressure at T = 98C is 0.093182MPa
a) [tex] \frac{p}{\rho g} = h = \frac{93182 pa}{9.81 \times 13560} [/tex]
= 0.70 m
Usinf the same equation to get altitude, and the pressure in part a
b) [tex] \frac{p}{\rho g} = h = \frac{93182}{1.186 \times 9.81} = 8009m [/tex]
How do I do part 'c'
Q = mcT?
I can work out the mass from the information given, [tex] m = \rho V = 0.002 \times 1000 = 2kg [/tex]
However how do I get initial temperate?
Thank you.