The kinetic energy of the electron is
where
is the mass of the electron and v its speed. Since we know the value of the kinetic energy, 
, we can find the value of the speed v:
where
Earth's surface receives about twice as much energy from the atmosphere than from the sun as a result of ____.
1 answer:
You might be interested in
Answer:
Explanation:
Let the distance moved by Joe is "d"
so the time taken by him to drove it by speed 45 mph is given as
now the same distance is traveled by him with speed 55 mph
so the time taken by him
so total time taken by him for complete distance 2d
now the average speed is given as