Water has an unusual expansion. Air space is left to prove room for expansion when the temperature falls below 4°C.
joseph rimiru answered the question on October 12, 2017 at 16:30
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A rectangular brick of weight 10 N, measures 50 cm × 30 cm × 10 cm. calculate the
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Date posted: October 12, 2017. Answers (1)
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Date posted: October 12, 2017. Answers (1)
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Date posted: October 12, 2017. Answers (1)
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Date posted: October 12, 2017. Answers (1)
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Date posted: October 12, 2017. Answers (1)
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The mass of an empty density bottle is 20 g. Its mass when filled with water is 40.0 g and 50.0 g when filled with liquid X. Calculate the density of liquid X if the density of water is 1,000 kgm^-3
Date posted: October 12, 2017. Answers (1)
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Date posted: October 12, 2017. Answers (1)
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a. 3:2 or 5:4
b. 3:4 or 5:7
(Solved)
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Date posted: October 12, 2017. Answers (1)
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Date posted: October 11, 2017. Answers (1)
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Date posted: October 11, 2017. Answers (1)
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Date posted: October 11, 2017. Answers (1)
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Date posted: October 11, 2017. Answers (1)
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Date posted: October 11, 2017. Answers (1)
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Date posted: October 11, 2017. Answers (1)
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Date posted: October 11, 2017. Answers (1)
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A alloy of copper mass 4 kg and specific heat capacity 400 J/kg K initially at 91⁰ is immersed in water at 20⁰ C. if the final temperature is 21⁰C, determine the mass of water.(the specific heat capacity of water is 4200 J/kg K). give your answer to one decimal place.
Date posted: October 11, 2017. Answers (1)
- Some water of mass 4 kg, at a temperature of 100° is allowed to cool for 20 minutes. State the factors that determine its final...(Solved)
Some water of mass 4 kg, at a temperature of 100⁰ is allowed to cool for 20 minutes. State the factors that determine its final temperature.
Date posted: October 11, 2017. Answers (1)
- An electric kettle rated 2000 W takes 20 minutes to heat 30 kg of a liquid from 30° C to 45°C. (Solved)
An electric kettle rated 2000 W takes 20 minutes to heat 30 kg of a liquid from 30⁰ C to 45⁰C.
Date posted: October 11, 2017. Answers (1)
- Ice change to water at 0° C. 5 kg of ice and 5 kg of water at 0° were heated separately. Give a reason why...(Solved)
Ice change to water at 0⁰ C. 5 kg of ice and 5 kg of water at 0⁰ were heated separately. Give a reason why more heat energy is required to heat ice.
Date posted: October 11, 2017. Answers (1)
- A boy took 10 kg of water and raised its temperature to 90° C. He add m2 kg of water at 20° C and...(Solved)
A boy took 10 kg of water and raised its temperature to 90⁰ C. He add m2 kg of water at 20⁰ C and the mixture attained a temperature of 50⁰ C. Determine the value of m2. (Assume the containers did not get heated. Specific heat capacity of water = 4200Jkg^-1k^-1)
Date posted: October 11, 2017. Answers (1)