Answer:
I don't understand please interpret
Distance=2m
because 200cm = 2m
so 4m-2m=2m
Answer: The answer is D
Explanation: i had the same question and i just guessed and got it first try
Answer:
Explanation:
All objects <u>radiate</u> energy.
Answer:
Magnetic force is equal to 
Explanation:
We have given electron is accelerated with a potential difference of 81700 volt.
Magnetic field B = 0.508 T
Angle between magnetic field and velocity 
Mass of electron 
Charge on electron 
By energy conservation.



Magnetic force on electron


