This phenomenon is known as a shock wave. Shock waves are also produced if the aircraft moves faster than the speed of sound. If a moving source of sound moves faster than sound, the source will always be ahead of the waves that it produces.
Plus, few majors can guarantee a financial return that will offset the financial debt many students will accumulate during college. Two-year degrees, of which an associate degree is the most common, provide training and education for a variety of fields in approximately half the time as a bachelor's degree. Plus, you can earn an associate degree from a local community college for a fraction of the cost of a four-year degree at a university. Also, for most areas of study, an associate degree puts you halfway toward a four-year degree should you decide to pursue one at a later time.
An Associates degree requires you to go to school for 2-3 years. A Bachelors requires you to go to school for 4 years. A Masters degree requires you to go to school for 6 years and you will have to write a thesis. A Doctoral/PHD is about 7-8 years of college and that includes your bachelor and masters degrees. Bachelor's degree is a four-year degree. A Master's degree is a degree that shows you have mastered a certain subject. It typically takes two years beyond a Bachelor's degree to achieve. A Doctorate degree is a degree that typically qualifies a person to teach in a particular field.