Vectors are equal if they have the same magnitude and direction regardless of where they are. Triangle ABC is isosceles. X is the midpoint of AB, Y is the midpoint of BC and Z is the midpoint of AC.

Vectors are equal if they have the same magnitude and direction regardless of where they are. Triangle ABC is isosceles. X is the midpoint of AB, Y is the midpoint of BC and Z is the midpoint of AC.

A 4.0-magnitude earthquake also struck Siwan, Bihar, at 8:02am on Monday, mere hours after a same-magnitude earthquake struck ...

San Franciscans were jolted by a 3.6 magnitude earthquake that struck just after 7 a.m. Friday at what may have been exact same location of San Francisco’s infamous 1906 earthquake. A 2.9 ...

These scales account for the distance between the earthquake and the recording seismometer so that the calculated magnitude should be about the same no matter where it is measured. Another scale is ...