Answer:
(a) Since both P and S wave travels the same distance, so it can be written as: Δx = V₁t₁ = V₂t₂,
Where, V₁- Speed of S wave
V₂- Speed of P wave
t₁- time taken by S wave
t₂- time taken by P wave
Therefore, t₁ > t₂ (since, time taken by S wave is longer than P wave)
⇒ t₁ = t₂ + 1.5 min
⇒ t₁ = t₂ + 90 sec
⇒ V₁ (t₂ + 90 sec) = V₂ (t₂)
⇒ V₁t₂ + V₁ (90 sec) = V₂ (t₂)
⇒ V₂t₂ - V₁t₂ = V₁ (90 sec)
⇒ t₂ (V₂- V₁) = V₁ (90 sec)
⇒ t₂ = {V₁ (90 sec)} ÷ {(V₂- V₁)}
⇒ t₂ = {5.5 × (90 sec)} ÷ {(8.5 - 5.5)}
Therefore, t₂ = 165 sec
Since, Δx = V₁t₁ = V₂t₂
Now, Δx = V₂t₂ = (8.5 × 165 sec)
⇒ Δx = 1402 km
Therefore, Δx is approximately 1400 km (this means that the earthquake occurred at a distance of about 1400 km from the recorded seismic station)
(b) No, Only seismic station is not sufficient to detect the epicenter of an earthquake. Seismologists and geologists usually use the triangulation method in order to determine the exact location of the epicenter. This is possible by the use of three seismographs that are placed at three different locations nearby to that earthquake occurring position.
Answer:
Jupiter is the 5th and most fastest spinning planet it completes an orbit around 11.86 years every year.
Explanation:
Jupiter is the biggest planet in our solar system, it's a gaianet and gaseous planet about 2.5 tims of all the planets combined. Like other planets jupiter doesn't have any defined solid surface, as a result of its rotation it has an oblate spheroid bulge along the equator and at it's boundaries are greater turbulence of storms and popular amongst them is the great Red storm.A complete day at the equator can be estimated by just nine hours and 50 minutes at the poles.
Answer:
According to (hrw dot com) the “Abstinence-Only HIV/AIDS Programs” in Uganda in the early 200x is called The Less They Know, the Better. Why the people there do not need to know so much about HIV, but they need just to follow the Abstinence ? “We don't think abstinence is really working in our communities. We work with children in primary five through seven who are engaging in sexual activities. We always come with the message to delay sexual debut. But for most children here, this is not enough.” - The youth leader of the program said.
So, the main reason why has the Ugandan government pushed Abstinence as a means of combating the spread of HIV/AIDS is: the people for whom the propaganda is done are mostly children above 10, who tend to start having sex at an early age. Uganda is home to nearly 1 million children orphaned by HIV/AIDS, many of them at high risk of HIV infection themselves.
“Abstinence Until Marriage" is the meaning of the Abstinence-Only HIV/AIDS Programs. The content of the propaganda is teaching that abstaining from sex until marriage is the only effective method of HIV prevention and that marriage between a man and a woman is the expected standard of human sexual behavior.
The other reasons are:
- Demographic and health surveys show that over half of Ugandan girls have had sex by age seventeen, usually with someone older.
- Among girls who marry before the age of eighteen, most marry men who have been sexually active for several years, often without having used condoms.
And there is the biggest problem for Uganda related to poverty: Ss in all countries, AIDS in Uganda is a disease of poverty. Many Ugandans live on less than U.S.$1 per day, a situation that has been exacerbated by decades of political violence and civil war. New HIV cases occur among girls trading sex for school fees, women enduring violent marriages because they lack economic independence, and orphans being pushed onto the street and sexually exploited.
Explanation:
Hope this answer can help you. Have a nice day!
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Answer : C
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