Question

Nikhil and his family were making a trip from Bangalore to Chennai for his cousin, Saranya's
wedding in a few days. The family is travelling to Chennai by car and are headed there early,
so that they could help the extended family with preparations for the wedding. All of Nikhil's
relatives are coming down to Chennai and Nikhil is really excited to meet them. Read the
following questions and see if you can answer them correctly.
Nikhil's father drone the car at an average speed of 30 miles/hr for the first 30 miles of the
trip from Bangalore to Chennai. For the next 30 miles, he drove at an average speed of 60
miles/hr and for the remaining 30 miles of the trip, he drove at an average speed of 90
miles/hr. If he made no stops during the trip, then what was his average speed in miles/hr
for the entire trip?​

Answer 1

Answer:

Step-by-step explanation:

When compression takes place in the medium, the density and pressure of the medium increase. This increase and decrease in density and pressure are temporary. Thus, compression is called the region of high density and pressure. Rarefaction is called the region of low density and pressure.