Doubtly
@Doubtly · Joined Feb 2021
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- Which factors attract more tourists in Brazil? The factors which attract more tourists in Brazil are: Clean, white sand beaches Attractive seacoasts Beautiful islands Beautiful orchards D... 1
- State whether right or wrong with reasons. (a) The future of tourism is bright in India due to its natural diversity. a. The future of tourism is bright in India due to its natural diversity. Answer: Right. b. Tourism is an invisible trade. Answer: Right. c.... 1
- If the height of a satellite completing one revolution around the earth in T seconds is h1 meter, Time period of the satellite is given as T = frac2π(R+h)^(3/2)√(GM) When the height of the satellite is h₁, it takes T time to revolve aroun... 1
- How much time a satellite in an orbit at height 35780 km above earth’s surface would take Given: Height of the satellite, h = 35780 km = 35.78×10⁶m Let the original mass of Earth be M. Then its new mass M’ will be 4M. ∴ M’= 4×6×10... 1
- Complete the following table IRNSS Weather study & predict Earth’s observation read in image 1
- Why it is beneficial to use satellite launch vehicles made of more than one stage? The major portion of weight in satellite launch vehicles is contributed by fuel. Thus, vehicles have to carry a large weight of fuel during... 1
- What is meant by satellite launch vehicles? Explain a satellite launch vehicle developed by ISRO with the help of a schematic diagram. A rocket used to carry an artificial satellite to a desired height above the earth's surface and then project it with a proper velocity so t... 1
- Why are geostationary satellites not useful for studies of polar regions? The geostationary satellites orbit above the equator or in equator plane, these satellites can’t fly over the polar regions. Also these sate... 1
- What is meant by the orbit of a satellite? On what basis and how are the orbits of artificial satellites classified? Orbit of a satellite Is its path around the earth. Orbits of artificial satellites can be classified on various basis. On the basis of the a... 1
- What is meant by an artificial satellite? How are the satellites classified based on their functions? A man made object revolving around the earth or any other planet in a fixed orbit is known as artificial satellites. Based on their function... 1
- State with reasons whether the following sentences are true or false a. If a spacecraft has to be sent away from A) If a spacecraft has to be sent away from the influence of earth’s gravitational field, its velocity must be less than the escape velocity... 2
- Fill in the blanks and explain the statements with reasoning: a. If the height of the orbit of a satellite from the earth surface Answer:1: If the height of the orbit of a satellite from the earth surface is increased, the tangential velocity of the satellite will decre... 1
- How to Score 170 Plus in NEET Physics 2022 ?| नीट फिजिक्स 2022 में 170 प्लस कैसे स्कोर करें? परीक्षा नजदीक होने के साथ, छात्र अपना अधिकांश समय बनाने में कोई कसर नहीं छोड़ रहे हैं और उस पूर्ण स्कोर को प्राप्त करने के लिए अपना सर्वश्रे... 1
- Read the book – ‘Pruthvivar Manus Uparach’ written by Late Dr. Sureshchandra Nadkarni and note your opinion on evolution. Read the book – ‘Pruthvivar Manus Uparach’ written by Late Dr. Sureshchandra Nadkarni and note your opinion on evolution. Source :: http://y... 2
- Make a presentation on human evolution using various computer softwares and arrange a group discussion over it in the class room. use images from internet and create a ppt from app like microsoft powerpoint available both on android and windows 2
- Write evolutionary history of modern man. The evolutionary history of modern man: Approximately 7 crore years ago, the dinosaurs disappeared completely. At that time, monkey-like ani... 1
- Define fossil. Explain importance of fossils as proof of evolution Fossils offer palaeontological evidence for the evolutionary process. Due to some natural calamities the organisms get buried during ancient... 1
- The essence of democracy is .......... (a) universal adult franchise. (b) decentralisation of power 2