What frequency must a sound wave have in air to have the same wavelength as a 750 hz sound wave in a platinum bar? vair = 340 m/s, vpt = 2800 m/s,

f = 91.1 Hz

Explanation:

As we know that it is given here that wavelength of sound in platinum is same as the wavelength of sound in air

so we can use the formula of wavelength in two mediums

now it is given that

frequency of sound in platinum is 750 Hz

now frequency of sound in air = f

now from above formula

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation: