50kg driving at 30kph because it’s the heaviest yet fastest!
They can do the experiment more than once and make sure they follow steps right like in a experiment
Initially its moving with tail wind so here the speed of wind will support the motion of the plane
so we can say
![V_{plane} + v_{wind} = \frac{distance}{time}](https://tex.z-dn.net/?f=V_%7Bplane%7D%20%2B%20v_%7Bwind%7D%20%3D%20%5Cfrac%7Bdistance%7D%7Btime%7D)
![V_{plane} + v_{wind} = \frac{1800}{9}](https://tex.z-dn.net/?f=V_%7Bplane%7D%20%2B%20v_%7Bwind%7D%20%3D%20%5Cfrac%7B1800%7D%7B9%7D)
![V_{plane} + v_{wind} = 200 mph](https://tex.z-dn.net/?f=V_%7Bplane%7D%20%2B%20v_%7Bwind%7D%20%3D%20200%20mph)
now when its moving with head wind we can say that wind is opposite to the motion of the plane
![V_{plane} - v_{wind} = \frac{distance}{time}](https://tex.z-dn.net/?f=V_%7Bplane%7D%20-%20v_%7Bwind%7D%20%3D%20%5Cfrac%7Bdistance%7D%7Btime%7D)
![V_{plane} - v_{wind} = \frac{1800}{12}](https://tex.z-dn.net/?f=V_%7Bplane%7D%20-%20v_%7Bwind%7D%20%3D%20%5Cfrac%7B1800%7D%7B12%7D)
![V_{plane} - v_{wind} = 150mph](https://tex.z-dn.net/?f=V_%7Bplane%7D%20-%20v_%7Bwind%7D%20%3D%20150mph)
now by using above two equations we can find speed of palne as well as speed of wind
![V_{plane} = 175 mph](https://tex.z-dn.net/?f=V_%7Bplane%7D%20%3D%20175%20mph)
![v_{wind} = 25 mph](https://tex.z-dn.net/?f=v_%7Bwind%7D%20%3D%2025%20mph)
When the pump removed the air in the bell, the balloon expanded.
<u>Option: B</u>
<u>Explanation:</u>
In order to construct our own environment in the glass jar known as bell jar system, which can be used to explore and consider our larger environment on Earths, for an instance. Here a glass jar that hinges on an airtight rubber basis i.e seals appropriately. At the top of the jar, a bung is connected to it which passed via a metal tube. It has an adjacent flexible tube that goes to a hand vacuum pump and the best hand-powered pump was made with a wine preserver.
When the pump extracts the air from the bell jar, the pressure inside the balloon naturally decreases. The balloon usually has a air pressure around it, which restricts its size, but when this air is extracted and the pressure around it decreases the gas in the balloon will expand and the balloon seems to be inflating. When you release the air back into the bell jar, it will once again compress back to its actual size.
Answer:
![x_{distance}=10.07km](https://tex.z-dn.net/?f=x_%7Bdistance%7D%3D10.07km)
Explanation:
Given data
time=0.530 h
Average velocity Vavg=19.0 km/s
To find
Displacement Δx
Solution
The Formula for average velocity is given as
![V_{avg}=(x_{distance} )/(t_{time} )\\ x_{distance}=V_{avg}*(t_{time} )\\x_{distance}=(19.0km/h)*(0.530h)\\x_{distance}=10.07km](https://tex.z-dn.net/?f=V_%7Bavg%7D%3D%28x_%7Bdistance%7D%20%29%2F%28t_%7Btime%7D%20%29%5C%5C%20x_%7Bdistance%7D%3DV_%7Bavg%7D%2A%28t_%7Btime%7D%20%29%5C%5Cx_%7Bdistance%7D%3D%2819.0km%2Fh%29%2A%280.530h%29%5C%5Cx_%7Bdistance%7D%3D10.07km)