This speaker is part of Rice's Orwellian public announcement system. Assume it emits a spherical wave at 300 Hz that travel at 343 m/s. Your head is 51.20 m from the speaker. Your friend is walking behind you and his head is 51.835 m from the speaker. What is the difference in phase between the sound waves that you hear and your friends hear in degrees

Hi, your answer is not correct. this is a cumulative  

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

La olla es de metal por que se calienta mas rápido, y las manijas son de madera por que así no se calientas y tienden a estar mas frías.