whitakers87
22.06.2020 •
Physics
Why does a balloon filled with hydrogen rises up only to a certain height
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Ответ:
they will rise up because hydrogen is lighter in density and it's weight is lower when it's in the air
Explanation:
Ответ:
hydrogen is less dense and its weight is also less than the air.
Explanation:
Ответ:
Explanation:
What is average speed?
It is the total distance traveled divided by the time taken to cover the total distance traveled
Given that the various distances are
20 miles and 10 miles
the total distance traveled is 20+10= 30 miles
the average speed is expressed as
average speed= total distance/time taken
average speed= 30/1
average speed= 30 miles/hour
The average velocity is a vector quantity
the velocity is the average displacement divided by time taken
average velocity= displacement / time
average velocity= 2.24 /1
average velocity= 2.24 miles/hour