Which is an instant messenger that is used for chatting?
A. | Google Talk |
B. | Altavista |
C. | MAC |
D. | Microsoft Office |
Option: A Explanation : Click on Discuss to view users comments. |
The Gross Enrolment Ratio (GER) in institutions of higher education in India at present (2015) is about:
A. | 23 percent |
B. | 8 percent |
C. | 12 percent |
D. | 19 percent |
Option: D Explanation : Click on Discuss to view users comments. |
Two earthquakes A and B happen to be of magnitude 5 and 6 respectively on Richter Scale. The ratio of the energies released EB/EA will be approximately:
A. | ~64 |
B. | ~8 |
C. | ~16 |
D. | ~32 |
Option: D Explanation : Click on Discuss to view users comments. Rockz said: (10:29am on Tuesday 1st December 2015)
How is the ans 32?calculations please
Priya Waghmare said: (1:13pm on Monday 7th November 2016)
The Richter scale is a base-10 logarithmic scale, meaning that each order of magnitude is 10 times more intensive than the last one. In other words, a two is 10 times more intense than a one and a three is 100 times greater. In the case of the Richter scale, the increase is in wave amplitude. That is, the wave amplitude in a level 6 earthquake is 10 times greater than in a level 5 earthquake, and the amplitude increases 100 times between a level 7 earthquake and a level 9 earthquake. The amount of energy released increases 31.7 times between whole number values.
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