Please help with questions 5-8 and help with the option it is thank you

Question 5 1 pts A transverse wave has a period of 0.35 seconds. If the wave speed is 400 m/s, then the wavelength of the wave is 612 m 37 m 26 m 140 m Question 6 1 pts A 120 gram wire that is 4 m long is under tension. When a transverse wave of frequency 350 Hz travels down the wire, its wavelength is 0.60 m and its amplitude is 17.2 cm. What is the tension in the wire? 17,512 N 1323 N O 0.188 N 216 N Question 7 1 pts What is the intensity of a wave that delivers a constant power of 100 W to a spot 0.6 m in diameter. 17.63 W/m2 88.4 W/m2 O 2.80 W/m2 O 0.125 W/m2 Question 8 1 pts A standing transverse mechanical wave in a string under tension has a fundamental frequency of 332 Hz. Which of the following will not be a resonant frequency of the string? O 996 Hz 1660 kHz 1328 Hz O 764 Hz