25 degrees C c. 29 degrees C d. 35 degrees C Attenuation and Speed of Sound - Air Humidity and Frequency - Speed and attenuation of sound at varous frequencies and air humidities; Doppler Effect - The change in frequency of sound due to relative motion between source and listener The Speed of Sound in Air. Speed of Sound in Various Bulk Media Gases: Material: v (m/s) Hydrogen (0°C) 1286: Helium (0°C) 972: Air (20°C) 343: Air (0°C) The speed of sound varies depending on altitude, temperature and the medium through which it travels.For example, at sea level in a standard atmosphere, at a temperature of 59-degrees Fahrenheit (15 Celsius), sound travels 761 miles per hour (1,225 km/p/h). All standard 22 magnum cartridge are faster than the speed of sound. The difference between the speed of sound in air at 0 degrees Celsius and the speed of sound in air at 20 degrees Celsius is that A) cooler air molecules move more slowly and respond less readily to the energy of a sound wave B) asked by Need Urgent Help Please on December 31, 2015; More Similar Questions Asked in Physics What is the speed of sound in medium air? The speed of a sound wave in air depends upon the properties of the air, mostly the temperature, and to a lesser degree, the humidity. The speed of sound at 30,000ft on a 'Standard Day' (-44.4 degrees C) is about 678mph or 1091kph. Speed of Sound. A cold front will continue its trek across the western U.S. this weekend with an area of low pressure expected to develop along the front as it shifts east of the Rockies Sunday night. As it does, particles of gaseous water become mixed in the air. All for 20 o C, 1 Atm, audible frequencies. a. At a temperature of 32-degrees Fahrenheit (0 Celsius) the speed of sound drops to 742 mph (1,194 km/p/h). The speed of sound in helium at 0°C is about 972 m/s, compared to 331 m/s in air. The speed of sound is dependent on the density of the air. The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium. as the temperature changes, the speed of sound will change by 0.6 m/s for each degree Celsius. Example 2: Calculate the speed of sound at 25 °C, which is 77 degrees Fahrenheit (°F). This calculator will approximate the speed of sound based on air temperature. The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium. Air Temperature: in Celsius Fill in the temperature to determine the approximate adjusted speed of sound. How does this speed of sound calculator work? Sound travels through air as a result of collisions between the molecules in the air. It took 10 seconds for the sound to arrive, so the distance was 3430 meters. The speed of sound in air at 25 degree Celsius is 343m/s. This Weekend. Cold Front Crossing the Western U.S. Humidity is the result of water vapor being present in air. The density of the air is dependent on the temperature of the air. Below are examples for the speed of sound at two fairly comfortable, but slightly different indoor temperatures. Consult that reference for other conditions. The speed of sound in air is approximately figured out by the formula … speed of sound (m/s) = 331.5 + 0.60 T(°C) For example, the speed of sound in air is 386 m/s at 100 °C. This is consistent with the general relationship for sound speed in gases since the density of helium is so much less than that of air.. At a temperature of 32-degrees Fahrenheit (0 Celsius) the speed of sound drops to 742 mph (1,194 km/p/h). The high speed of sound is responsible for the amusing "Donald Duck" voice which occurs when someone has breathed in helium from a balloon. Extrapolated from tables in the reference below. The speed of sound varies depending on the temperature of the air through which the sound moves. At sea level, at a temperature of 21 degrees Celsius (70 degrees Fahrenheit) and under normal atmospheric conditions, the speed of sound is 344 m/s (1238 km/h or 770 mph). 23 degrees C b.