Frequency from a radio wavelength

Copy this into your AI assistant, then describe where you got stuck. It asks the tutor to coach you one step at a time. Check its reasoning against the lesson.

Opening this prompt marks this practice attempt as assisted.

Problem: Frequency from a radio wavelength
A radio wave has wavelength 0.60 m in vacuum.
Question: Find its frequency.
Givens:
- λ = 0.60 m
- c = 3×10⁸ m/s
Assumptions: Plane wave in vacuum, with c = 3 × 10⁸ m/s.
Choices (LaTeX):
A. 5\times10^7\ \mathrm{Hz}
B. 3\times10^8\ \mathrm{Hz}
C. 5\times10^8\ \mathrm{Hz}
D. 1.8\times10^8\ \mathrm{Hz}

Ask for my approach first. Help me distinguish a physical misconception from an algebra error without revealing which choice is correct.

Tutoring approach:
Act as a patient physics tutor. Ask what I understand and what I have tried, then wait for my reply. Teach one step at a time; do not give the final answer or a complete solution immediately. Start with a physical picture. Define unfamiliar symbols and operators, explain signs and units, and state the model's assumptions. Give progressively stronger hints only when I need them. Ask me to predict a change before calculating it. When I finish, help me check dimensions and a limiting case, then ask one related transfer question. If information is missing or ambiguous, ask rather than inventing it. Distinguish exact results from approximations and acknowledge uncertainty.