Approximate Value Of Room Temperature

Rho is the mass per unit volume of earth s atmosphere air density like air pressure decreases with increasing altitude.

Approximate value of room temperature.

Room temperature electrical resistivity versus composition for copper zinc alloys. For climate control a typical room temperature range is from 15 c 59 f to 25 c 77 f. Human comfort can extend beyond this range depending on humidity air circulation and other factors. People tend to accept a slightly higher room temperature in the summer and lower value in the winter based on the clothing they would wear outdoors.

It also changes with variation in atmospheric pressure temperature and humidity at 1013 25 hpa abs and 15 c air has a density of approximately 1 225 kg m or 0 00237 slug ft about 1 1000th that of. The density of air or atmospheric density denoted ρ greek. The lower the density that of a medium the faster the speed of sound and the higher the compressibility is the slower the sound travels. The speed of sound in air is approximately 331 5 m s at 0 c or around 1200 km per hour.

The speed of sound through air is approximately 343 m s at normal room temperature which is at 20 c. From figure 12 38 estimate the value of a in equation 12 11 for zinc as an impurity in copper zinc alloys. Room temperature ranges from 15 25c 59 77f only approximately so to 2 dp at normal pressure and room temperature 20 deg c the mass is 0 998 207 1 grams only approximately so to 2 dp at.