Suppose that a person eats a diet of 2388 Calories per day. Convert this energy into joules.
Convert this energy into kilojoules.
Convert this energy into kilowatt-hours.

9991 J

9.991 kJ

2.78 × 10⁻³ kWh

Explanation:

Step 1: Given data

Energy consumed per day by a person (E): 2388 cal

Step 2: Convert "E" to J

We will use the conversion factor 1 cal = 4.184 J.

2388 cal × 4.184 J/1 cal = 9991 J

Step 3: Convert "E" to kJ

We will use the conversion factor 1 kJ = 1000 J.

9991 J × 1 kJ/1000 J = 9.991 kJ

Step 4: Convert "E" to kWh

We will use the conversion factor 1 kWh = 3600 kJ.

9.991 kJ × 1 kWh/3600 kJ = 2.78 × 10⁻³ kWh

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

your answer is c) plasma

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