In Joule's Experiment, an Insulated Container Contains 20 Kg of Water

question 65

Multiple Choice

In Joule's experiment, an insulated container contains 20 kg of water initially at 25°C. It is stirred by an agitator, which is made to turn by a slowly falling body weighing 40 kg through a height of 4 m. The process is repeated 500 times. The acceleration due to gravity is 9.8 ms-2 . Neglecting the heat capacity of agitator, the temperature of water (in °C) is

• A)40.5
• B)34.4
• C)26.8
• D)25

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Definitions:

Randomized Block Design

An experimental design that involves dividing subjects into blocks and then randomly applying different treatments within each block to control for variance among blocks.

Blocks Mean Square

A measure used in the analysis of variance (ANOVA) to assess the variability within groups or blocks of data.

Sum of the Squared Deviations

A measure used in statistics, representing the total of the squared differences between each observation in a dataset and the dataset's mean.

Blocks Variation

The variation among experimental units that is accounted for by grouping them into blocks based on certain characteristics to reduce confounding effects.