1) when equal masses of hot water and oil at the same temperature are allowed to cool water cools slower than oil . why?
2) describe the structure and function of a maximum minimum thermometer .
3) what is the effect on the molecules of matter when the temperature is varied ?
4) "the sun is regarded as the main source of energy". justify .
5) why is the development and use of alternative energy source necessary in today's world ?
6) why coal is called the fossil fuel ?
7) write the differences between pressure and upthrust .
8) how does a hot air balloon rise up ?
9) explain the roles of piston valve of a water pump .
10) we experience nose bleeding while checking to higher altitude. why ?
those who will ans all these question i will mark brailiest
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Answers: 1
Physics, 22.06.2019 06:30
At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid
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Physics, 22.06.2019 12:00
Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?
Answers: 3
Physics, 22.06.2019 23:30
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1) when equal masses of hot water and oil at the same temperature are allowed to cool water cools sl...
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