Answer:
5.3 hours
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
a = Acceleration
m = Mass
Force
![F=2T\\\Rightarrow F=2\times 50000\\\Rightarrow F=100000\ N](https://tex.z-dn.net/?f=F%3D2T%5C%5C%5CRightarrow%20F%3D2%5Ctimes%2050000%5C%5C%5CRightarrow%20F%3D100000%5C%20N)
The force generated by the jet engines is 100000 N
From Newton's Second law
![F=ma\\\Rightarrow a=\frac{F}{m}\\\Rightarrow a=\frac{100000}{3.2\times 10^8}\\\Rightarrow a=0.0003125\ m/s^2](https://tex.z-dn.net/?f=F%3Dma%5C%5C%5CRightarrow%20a%3D%5Cfrac%7BF%7D%7Bm%7D%5C%5C%5CRightarrow%20a%3D%5Cfrac%7B100000%7D%7B3.2%5Ctimes%2010%5E8%7D%5C%5C%5CRightarrow%20a%3D0.0003125%5C%20m%2Fs%5E2)
Equation of motion
![v=u+at\\\Rightarrow t=\frac{v-u}{a}\\\Rightarrow t=\frac{6-0}{0.0003125}\\\Rightarrow t=19200\ s=\frac{19200}{3600}=5.3\ hours](https://tex.z-dn.net/?f=v%3Du%2Bat%5C%5C%5CRightarrow%20t%3D%5Cfrac%7Bv-u%7D%7Ba%7D%5C%5C%5CRightarrow%20t%3D%5Cfrac%7B6-0%7D%7B0.0003125%7D%5C%5C%5CRightarrow%20t%3D19200%5C%20s%3D%5Cfrac%7B19200%7D%7B3600%7D%3D5.3%5C%20hours)
It will take 5.3 hours to reach a speed of 6 m/s
Answer:53.3m/s
Explanation:
time for first travel
time=distance/speed
time=40/80
time=0.5seconds
time for second travel:
time=distance/speed
time=40/40
time=1seconds
total time=0.5+1
total time=1.5seconds
Then average speed for 80km trip:
Speed=distance/time
Speed=80/1.5
Speed=53.3m/s
Answer:
microscopic means that they are very very tiny, you cannot see them with the human eye, you have to use a tool like a microscope
Explanation:
Answer:
Volume will increase by factor 2
So option (A) will be correct answer
Explanation:
Let initially the volume is V pressure is P and temperature is T
According to ideal gas equation
, here n is number of moles and R is gas constant
So
....................eqn 1
Now pressure is doubled and temperature is quadrupled
So new volume
........eqn 2
Now comparing eqn 1 nad eqn 2
![V_{new}=2V](https://tex.z-dn.net/?f=V_%7Bnew%7D%3D2V)
So volume will increase by factor 2
So option (A) will be correct answer