Voltage Vaporization: 2.5C Charge, 3.3 MJ Energy, 1.32 MV Potential Diff

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Homework Help Overview

The discussion revolves around a physics problem involving a lightning flash that transfers a specific charge and energy to the Earth, with a focus on calculating the potential difference and exploring the implications for boiling and vaporizing water.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • Participants are seeking equations related to the heat of vaporization and specific heat, indicating a need for conceptual clarification on these topics.

Discussion Status

The discussion appears to be in its early stages, with participants expressing a lack of initial attempts and seeking foundational knowledge about relevant physical concepts. There is a call for engagement, but no consensus or clear direction has emerged yet.

Contextual Notes

Participants have indicated a need for assistance with specific equations related to the problem, suggesting that they may be constrained by their current understanding of thermodynamic principles.

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Homework Statement


A lightning flash transfers 2.5 C of charge and 3.3 MJ of energy to the Earth.

(a) Across what potential difference did it travel? 1.32 MV
(b) How much water could this boil and vaporize, starting from room temperature?



Homework Equations



need help finding equations for b

The Attempt at a Solution



none yet
 
Physics news on Phys.org
Do you know anything about specific heat and heat of vaporization?
 
nope
just basic energy and voltage equations
 
anyone?
 

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