Table of contents

0. Math Review31m
- Math Review
  31m
1. Intro to Physics Units1h 29m
2. 1D Motion / Kinematics3h 56m
3. Vectors2h 43m
4. 2D Kinematics1h 42m
5. Projectile Motion3h 6m
6. Intro to Forces (Dynamics)3h 22m
7. Friction, Inclines, Systems2h 44m
8. Centripetal Forces & Gravitation7h 26m
9. Work & Energy1h 59m
10. Conservation of Energy2h 54m
11. Momentum & Impulse3h 40m
12. Rotational Kinematics2h 59m
13. Rotational Inertia & Energy7h 4m
14. Torque & Rotational Dynamics2h 5m
15. Rotational Equilibrium3h 39m
16. Angular Momentum3h 6m
17. Periodic Motion2h 9m
18. Waves & Sound3h 40m
19. Fluid Mechanics4h 27m
20. Heat and Temperature3h 7m
21. Kinetic Theory of Ideal Gases1h 50m
22. The First Law of Thermodynamics1h 26m
23. The Second Law of Thermodynamics3h 11m
24. Electric Force & Field; Gauss' Law3h 42m
25. Electric Potential1h 51m
26. Capacitors & Dielectrics2h 2m
27. Resistors & DC Circuits3h 8m
28. Magnetic Fields and Forces2h 23m
29. Sources of Magnetic Field2h 30m
30. Induction and Inductance3h 38m
31. Alternating Current2h 37m
32. Electromagnetic Waves2h 14m
33. Geometric Optics2h 57m
34. Wave Optics1h 15m
35. Special Relativity2h 10m

9. Work & Energy

Intro to Energy & Kinetic Energy

Physics

9. Work & Energy

Intro to Energy & Kinetic Energy

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Multiple Choice

Assume that the daily energy consumption of a household is 10 kWh. Calculate the corresponding energy, expressed in joules.

360,000 joules

3,600,000 joules

36,000 joules

36,000,000 joules

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Verified step by step guidance

Understand the problem: We need to convert energy from kilowatt-hours (kWh) to joules (J). The daily energy consumption is given as 10 kWh.

Recall the conversion factor: 1 kWh is equivalent to 3,600,000 joules. This is because 1 kWh is 1,000 watts used for 1 hour, and 1 watt is 1 joule per second. Therefore, 1 kWh = 1,000 watts × 3,600 seconds = 3,600,000 joules.

Set up the conversion: Multiply the energy consumption in kWh by the conversion factor to find the energy in joules. Use the formula:

E = 10 \times 3600000

Perform the multiplication: Calculate the product of 10 and 3,600,000 to find the energy in joules.

Interpret the result: The calculated energy in joules represents the daily energy consumption of the household, which should match the correct answer provided in the problem statement.