It makes calculations with very large and small numbers easier.
Scientific notation is a system used in order to It makes calculations with very large and small numbers easier. It is useful as it allows very large number that would take a lot of space to write otherwise, and it allows them to be calculated easier. 
for example is a incredible large number, but written in this form is immediately understandable and useful for calculation.
It will land in your lap because there's different frames of motion relative to yourself. For example, if you're running at a speed of 6 mph, it doesn't mean you'll run as fast as the Earth spins. Also, since you're on the interior of the plane, any kind of wind or weather on the outside will not affect the coin. A law to back up this claim is Einsteins Special Law of Relativity.
I would definitely think its B....
Answer:
2000 V/m
1778021.69323 m/s
Explanation:
V = Voltage = 9 V = 
q = Charge of proton = 
m = Mass of electron = 
v = Velocity of electron
Electric field is given by
The electric field is 2000 V/m
Here, the energy of the system is conserved
The velocity of the electron is 1778021.69323 m/s
