Which two statements about redox reactions are true? HELP ASAP!!!!
1 answer:
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Answer:
Magnetic field,
Explanation:
Given that,
Velocity of electron,
It enters a region of space where perpendicular electric and a magnetic fields are present.
Magnitude of electric field,
We need to find the magnetic field will allow the electron to go through the region without being deflected.
Magnetic force on the electron, .......(1)
Electric force on the electron, F = q E........(2)
From equation (1) and (2) we get:
B = 0.0002 T
or
Hence, this is the required solution.
(a) The angular acceleration of the wheel is given by
where
and 
are the initial and final angular speed of the wheel, and t the time.
In our problem, the initial angular speed is zero (the wheel starts from rest), so the angular acceleration is
(b) The wheel is moving by uniformly rotational accelerated motion, so the angle it covered after a time t is given by
where
is the initial angular speed. So, the angle covered after a time t=3.07 s is
where
In our problem, the initial angular speed is zero (the wheel starts from rest), so the angular acceleration is
(b) The wheel is moving by uniformly rotational accelerated motion, so the angle it covered after a time t is given by
where