A) 245 m
B) 490 m
C) 980m
D) 735m
Correct Answer: A
Solution :
Speed of rocket after 5s. \[=\frac{6.63\times {{10}^{-34}}\times 3\times {{10}^{8}}}{590\times {{10}^{-9}}}\] \[=\frac{6.63\times 3}{59}\times {{10}^{-18}}\] \[=\frac{90}{100}\times 10=9W\] From \[=\frac{9\times 59}{6.63\times 3\times {{10}^{-18}}}=2.67\times {{10}^{19}}\] \[=200\text{ }MeV\] \[=200\times 1.6\times {{10}^{-19}}\times {{10}^{6}}\] When engine is turned off \[=200\times 1.6\times {{10}^{-13}}\] \[P-1000kW\] \[=\frac{Power}{Energy}\] Maximum height from earth surface \[=\frac{{{10}^{o}}}{200\times 1.6\times {{10}^{-13}}}\]
You need to login to perform this action.
You will be redirected in
3 sec
