Relationships Between Force, Field, Energy, Potential Video Lessons

Concept

# Problem: A proton with an initial speed of 800000 m/s is brought to rest by an electric field.Part A. Did the proton move into a region of higher potential or lower potential?Part B. What was the potential difference that stopped the proton?ΔV = ________ VPart C - What was the initial kinetic energy of the proton, in electron volts?Ki =_________ eV

###### FREE Expert Solution

We are required to identify the effects of change in potential on the motion of a positively charged particle and perform calculations involving energy.

Law of conservation of energy:

$\overline{){{\mathbf{K}}}_{{\mathbf{0}}}{\mathbf{+}}{{\mathbf{U}}}_{{\mathbf{0}}}{\mathbf{+}}{{\mathbf{W}}}_{{\mathbf{nc}}}{\mathbf{=}}{{\mathbf{K}}}_{{\mathbf{f}}}{\mathbf{+}}{{\mathbf{U}}}_{{\mathbf{f}}}}$, where Wnc is the work done by non-conservative forces such as friction.

Kinetic energy:

$\overline{){\mathbf{K}}{\mathbf{=}}\frac{\mathbf{1}}{\mathbf{2}}{{\mathbf{mv}}}^{{\mathbf{2}}}}$

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###### Problem Details

A proton with an initial speed of 800000 m/s is brought to rest by an electric field.

Part A. Did the proton move into a region of higher potential or lower potential?

Part B. What was the potential difference that stopped the proton?
ΔV = ________ V

Part C - What was the initial kinetic energy of the proton, in electron volts?
Ki =_________ eV

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Relationships Between Force, Field, Energy, Potential concept. You can view video lessons to learn Relationships Between Force, Field, Energy, Potential. Or if you need more Relationships Between Force, Field, Energy, Potential practice, you can also practice Relationships Between Force, Field, Energy, Potential practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Liebovitch & Shuvayev's class at QC CUNY .