Hydrogen atoms are placed in an external magnetic field. The protons can make transitions between states in which the nuclear sp
in component is parallel and antiparallel to the field by absorbing or emitting energy.What magnetic-field magnitude is required for this transition to be induced by photons with frequency 23.1 MHz?
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a) For the motion of car with uniform velocity we have , , where s is the displacement, u is the initial velocity, t is the time taken a is the acceleration.
In this case s = 520 m, t = 223 seconds, a =0
Substituting
The constant velocity of car a = 2.33 m/s
b) We have
s = 520 m, t = 223 seconds, u =0 m/s
Substituting
Now we have v = u+at, where v is the final velocity
Substituting
v = 0+0.0209*223 = 4.66 m/s
So final velocity of car b = 4.66 m/s
c) Acceleration = 0.0209