A system gains 2780 J of heat at a constant pressure of 1.26 3 105 Pa, and its internal energy increases by 3990 J. What is the change in the volume of the system, and is it an increase or a decrease?

Review Questions Two notes form an octave. How are their frequencies related What are transverse and longitudinal (compressional) waves Give examples. Describe sound wave, compressions, rarefactions. How large are the pressure and density variations in sound waves Normal atmospheric pressure, due to weight of atmosphere, is 14.7 lb/in 2 Units: 1 m = 100 cm = 1000 mm = 3.28 ft, 1 kg weighs 2.21 lb. Explain wavelength , period P, frequency f=1/P and give their units. Speed, wavelength, and frequency related by v=f. As f increases, decreases. What is the audible range of wavelengths What is the audible range of frequencies Speed of sound in air is 344 m/s at 20 degrees Celsius (68 degrees Fahrenheit). How is the speed affected by changes in the temperature of t