PLS HELP Please include at least 3-5 sentences: Explain and compare the causes and propagation (How waves travel) of sound waves. PLS HELP DO NOT PUT A FILE

Aspecimen of oil having an initial volume of 580cm^3 is subjected to a pressure increase of 4.0 mpa, and the volume is found to decrease by 0.40 cm^3. (a) what is the bulk modulus of the material? (b) what is the compressibility of the material?

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

At what time will the interfering waves have an amplitudeof zero?