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: A positive feedback loop occurs in nature when the product of a reaction leads to an increase in that reaction. If we look at a system in homeostasis, a positive feedback loop moves a system further away from the target of equilibrium.
Answer:
The Democratic Republic of the Congo (DRC), the second-largest country in Africa, has been mired in conflict for decades. A country of paradoxes, it is a land rich in natural resources, but its people are among the poorest in the world.
While the DRC has vast amounts of oil, diamonds, gold, and other natural resources, a majority of the population — about 64% — is considered extremely poor and lives on less than $1.90 a day, according to World Bank estimates.
The country is fraught with political instability, armed clashes, and human rights violations. Conflict erupted in 2016 in the Kasai region, which includes five provinces in the center of the country. It is yet another instance of fighting between the military and splintered ethnic militias. Nationally, 2.1 million people were newly displaced in 2017 and 2018, making the DRC the African country with the highest number of internally displaced people — 4.5 million. About 13 million people lack adequate food, including more than 1.3 million children under 5 affected by severe acute malnutrition.
Ebola alert — July 17, 2019: The World Health Organization has declared an Ebola outbreak in northeast DRC that began in August 2018 to be a public health emergency of international concern. WHO chief Tedros Adhanom Ghebreyesus called for countries to commit more resources to fight the disease. His announcement came three days after a case of Ebola was confirmed in Goma, the capital of Northern Kivu province, which is a transportation hub and home to 1 million people.
Ebola briefly broke out in May 2018 in northwestern DRC, then the deadly virus resurfaced in August in the northeast. This is the 10th outbreak of the deadly viral disease in the DRC since it was identified in the 1970s. Earlier outbreaks were quickly contained and didn’t spread beyond isolated rural communities.
Explanation:
By tradition, the city of Rome was founded in 753 B.C.*
But the awnser to your question is D
The Trojan prince Aeneas, an important figure linking the Romans with
the Trojans and the goddess Venus, is sometimes credited with the
founding of Rome as the culmination of his post-Trojan War adventures,
but the version of the Roman foundation myth that is most familiar is
that of Romulus, the first king of Rome.
Answer:
C. Deficits
Explanation:
Government Expenditure is government expenditure that covers all government consumption and investment but does not include transfer payments made by the state.
Some types of Government Expenditure are like for health and education. For health as provided for the BPJS program while for education is like for free education which is then issued through BOS.
The higher this expenditure will cause a decrease in the amount of money the state has. So that it will cause a deficit. But in the end with spending on higher education can also be an investment in the future.
The higher expenditure on health then shows that the country has a lot of poor people. Thus there will be a lot of subsidies that must be issued by the government to help residents like this
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About Transportation in Bogota, Colombia brainly.com/question/12984553#
Details
- Grade : College
- Subject : Geography
Keywords
- Government Expenditures
