Q5. Hi please help with each question in photo. Will give thumbs up thanks!

Which of the following frequencies are higher harmonics of a string with fundamental frequency of 150 Hz? (Select all that apply.) 200 Hz 500 Hz 400 Hz 600 Hz 300 Hz A pipe open at both ends resonates at a fundamental frequency fopen. When one end is covered and the pipe is again made to resonate, the fundamental frequency is fclosed. Which of the following expressions describes how these two resonant frequencies compare? O fclosed = fopen none of these O fclosed = (1/2) fopen O fclosed = 2 fopen O fclosed = (3/2) fopen Balboa Park in San Diego has an outdoor organ. When the air temperature increases, how does the fundamental frequency of the one of the organ pipes change? (The thermal expansion of the pipe is negligible.) decreases impossible to determine O increases stays the same