[Note: I did the first half of this question by myself and got it correct. But I got the second half wrong]
Question:
How much work does the electric field do in moving a proton from a point with a potential of +160 V to a point where it is -45 V ? Express your answer in joules.
Answer: Wba= 3.3x10^-17 J
Part 2 Question:
Express your answer in electron volts. (Express your answer using two significant figures.)
Answer: Wba=_______ eV
I got 205986 eV but it was marked as incorrect. I really need help on this, please.
did you see the two sig fig part?
210000
To calculate the work done in electron volts (eV), we can use the formula:
1 eV = 1.6 x 10^-19 J
Given that Wba = 3.3 x 10^-17 J, we can convert it to electron volts (eV) by dividing by the conversion factor:
Wba (in eV) = (3.3 x 10^-17 J) / (1.6 x 10^-19 J/eV)
The units "J" cancel out, leaving us with the work done expressed in electron volts (eV). So, let's calculate it:
Wba (in eV) = (3.3 x 10^-17) / (1.6 x 10^-19)
Dividing these values, we get:
Wba (in eV) ≈ 205.4 eV
Therefore, the work done in electron volts (eV) is approximately 205.4 eV. It seems there was a slight rounding error in your calculation that caused the discrepancy.