An earthquake emits both s-waves and p-waves which travel at different speeds through the earth. a p-wave travels at 9000 m/s and an s-wave travels at 5000 m/s. if p-waves are received at a seismic station 2.00 minute before an s wave arrives, how far away is the earthquake center?

the distance is 1350 Km

Explanation:

To solve this problem we will use the formulas of contant velocity motion:

Because the waves have to travel the same distance we can set the following equallity:

We know that the s waves arrive 2 minutes later, that is 120 seconds:

Rearranging the last equation we have :

As we said before they have to travel the same distance, so:

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

a cold ice-tea.

pour in room temperature or cold water. cover the pitcher and refrigerate. steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.jun 28, 2015