Explanation:
(a) After the engines stop, the rocket reaches a maximum height at which it will stop and begin to descend in free fall due to gravity.
(b) We must separate the motion into two parts, when the rocket's engines is on and when the rocket's engines is off.
First we must find the rocket speed when the engines stop:
This final speed is the initial speed in the second part of the motion, when engines stop until reach its maximun height. Therefore, in this part the final speed its zero and the value of g its negative, since decelerates the rocket:
So, the maximum height reached by the rocket is:
(c) In the first part we have:
And in the second part:
So, the time it takes to reach the maximum height is:
(d) We already know the time between the liftoff and the maximum height, we must find the rocket's time between the maximum height and the ground, therefore, is a free fall motion:
So, the total time is:
Force = (mass) x (acceleration)
Mass = 2000 grams = 2 kilograms
Force = (2 kg) x (8.3 m/s²)
Force = <em>16.6 Newtons</em>
Answer:
The surface charge density on planes A and B respectively is
and
Explanation:
From the question we are told that
The electric field in region to the left of A is
The direction of the electric field is left
The electric field in the region to the right of B is
The direction of the electric field is right
The electric field in the region between the two planes is
The direction of the electric field is right
Let the surface charge density on planes A and B be represented as
From the question we see that
Generally the electric to the right and to the left is due to the combined electric field generated by plane A and B so
=>
Generally the electric field at the middle of the plane A and B is due to the diffencence in electric field generated by plane A and B
i.e
=>
=>
From equation 1
=>
So
=>
Where the answer choice then i can answer it
It was an invention invented by Harrison Wells and Cisco Ramon to bring apart and merge FIRESTORM. This invention is totally fictional