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

32. Electromagnetic Waves

Wavefunctions of EM Waves

Physics

32. Electromagnetic Waves

Wavefunctions of EM Waves

Previous problemNext problem

Struggling with Physics?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

At one point in an otherwise empty space, an electromagnetic wave has a magnetic field strength of $2.0 μ T$ . What is the speed of this wave?

3.4 \times 10^{5} m / s

5.3 \times 10^{6} m / s

8.4 \times 10^{7} m / s

9.0 \times 10^{8} m / s

3.8 \times 10^{9} m / s

3.0 \times 10^{8} m / s

Previous problemNext problem

Verified step by step guidance

Understand that electromagnetic waves consist of oscillating electric and magnetic fields that propagate through space. The speed of these waves in a vacuum is a fundamental constant known as the speed of light, denoted by c.

Recall that the speed of light in a vacuum is approximately 3.0×10^8 m/s. This is a universal constant and applies to all electromagnetic waves, including those with varying magnetic field strengths.

Recognize that the magnetic field strength given in the problem (2.0 μT) does not affect the speed of the electromagnetic wave. The speed remains constant at 3.0×10^8 m/s regardless of the field strength.

Note that the problem provides multiple choice options for the speed of the wave. The correct answer is the speed of light, which is 3.0×10^8 m/s.

Conclude that the speed of the electromagnetic wave in the given scenario is 3.0×10^8 m/s, as this is the speed of light in a vacuum, unaffected by the magnetic field strength.