A rapidly spinning paddle wheel raises the temper

Question

A rapidly spinning paddle wheel raises the temperature of 450 mL of water from 22.8ºC to 25.9ºC. (Hint: to find mass, use the relation between, density, mass and volume)

a) The mass of water in grams

Answer for part 1

(density of water = 1000 kg/m3, also convert volume of water to cubic centimeter 1mL=1cm3).

b) The difference in temperature in kelvin

Answer for part 2

b) The work (energy) done in this process in joules

Answer for part 3

(specific heat of water = 4186 J/kg°C)

Gaurav · Accepted Answer

We know ,desinty of water is =1000kg/metercube =1gm/ml. So,mass of water = 1×450= 450gm.Difference of tempreture in KELVIN = Difference of tempreture in degreeSo, difference of tempreture in KELVIN = 25.9-22.8=3.1Kelvin Total woke done = specific heat × mass of in kg×tempreture differenceTotal work= 4186×0.450×3.1=5839.47joule

Modern Physics> A rapidly spinning paddle wheel raises th...

mazin , 4 Years ago

Gaurav

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Modern Physics> A rapidly spinning paddle wheel raises th...

mazin , 4 Years ago

Gaurav

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