Final answer:
The speed of sound in air at around 20°C is approximately 343 m/s, which is closest to option B, 1100 feet/second, when converting meters to feet.
Step-by-step explanation:
Sound travels at a speed that depends on the medium through which it is moving and the temperature of that medium. At 0°C, in air, the speed of sound is approximately 331 meters per second (m/s). However, this speed increases with temperature. For instance, at around 20°C, the speed of sound in air is about 343 m/s. This value is often used in calculations and reflects average room temperature conditions. Therefore, among the options provided (A) 700 feet/second, (B) 1100 feet/second, (C) 1000 feet/second, and (D) 800 feet/second, the closest to the actual speed of sound in air at room temperature is option (B) 1100 feet/second, which is approximately equal to 343 m/s when converted.
The speed of sound varies with temperature and the medium it travels through. At room temperature, around 20°C, the speed of sound in air is approximately 343 meters per second (m/s). To find the closest match among the provided options in feet per second, it's important to convert the speed from meters per second to feet per second.
1 meter is roughly equivalent to 3.28 feet. Therefore, 343 m/s is approximately equal to 1122 feet/second (343 m/s * 3.28 feet/meter).
Among the options provided, (B) 1100 feet/second is the closest approximation to the actual speed of sound in air at room temperature, making it the most accurate choice for this scenario.