Please post an essay 250-300 words on justification of specific online events in corona disaster (in devnagri script Hindi )
Answers
Answer:
The novel coronavirus disease (COVID-19) crisis has significantly redefined the humanitarian emergency paradigm and changed our understanding of disaster management in several ways.
First, the crisis is not limited by a geographic area or a cluster or physically defined areas in which the disaster occurred — as in an earthquake, flood or cyclone.
Second, effects of the disaster are so microscopic and invisible that one can easily underestimate its virulence or potency, as it happened in the early days of the pandemic. Earlier epidemics like SARS (Severe Acute Respiratory Syndrome) and those due to bird flu and Ebola had a relatively lower geographical influence, but the speed of transmission and virulence of COVID-19 has posed an entirely new challenge.
Third, to mitigate the impacts of COVID-19, we have severely restricted the process of globalisation, travel and access, which we welcomed with wide open arms two decades earlier.
Answer:
0.002
Frequency equals the number of waves that passes a given point per second or the number of oscillations of a vibrating body per second or number of cycles per second.
In this case, a mosquito vibrates its wings at an average rate of 500 vibrations per second. Therefore, the frequency of the sound is 500 Hz.
Time period of the wave is defined as the reciprocal of the frequency of the wave.
That is, T=f1=5001=0.002second.
Hence, time period of the sound produced by the mosquito is 0.002 second.