Question: User: Visual Prompt for AI Video Generator:Prompt: A high-tech digital chalkboard animation displaying physics formulas in glowing text: frequency $f = 1/T$, and wave speed $v = f\lambda = \lambda/T$ . Animated calculation steps break down units: frequency in Hertz (Hz), wavelength in meters (m), period in seconds (s), and wave speed in meters per second (m/s)[cite: 15]. A spotlight emphasizes substitution steps for exam success[cite: 15].English Voiceover & Text:Voiceover: "Frequency is the number of oscillations per second, measured in Hertz, and is the inverse of the period[cite: 15]. Wave speed equals frequency multiplied by wavelength[cite: 15]. Always show your substitution steps clearly in exams to secure full marks[cite: 15]!"