- #1
Square Root Practice: Multiplying by 1000NM/kJ
- Thread starter sandmanvgc
- Start date
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- Root Square Square root
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Homework Help Overview
The discussion revolves around a practice problem related to square roots and unit conversions, specifically involving the multiplication by 1000 NM/kJ. The context suggests a focus on understanding unit relationships in physics.
Discussion Character
- Conceptual clarification, Assumption checking
Approaches and Questions Raised
- Participants explore the reasoning behind multiplying by 1000 NM/kJ, with one suggesting it is a units conversion. Questions arise regarding the use of different notations for meters and joules, indicating potential confusion in the problem setup.
Discussion Status
The discussion is ongoing, with participants questioning the clarity of unit representations and expressing confusion about the notation used in the problem. Some guidance on unit conversion has been provided, but multiple interpretations of the units are being explored.
Contextual Notes
There are concerns about inconsistent unit notation, such as the use of both "M" and "m" for meters, and the representation of joules. Participants note that these inconsistencies may affect understanding.
- #2
berkeman
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It's just a units conversion. Multiply by "1" whenever you want to convert from one set of units to another (and have the two sets of units in the numerator and denominator with appropriate multipliers to keep the fraction = 1):sandmanvgc said:
$$1 = \frac{1000 N m}{1kJ}$$
Or in words, "1000 Newton-meters is equal to 1 kiloJoule"
- #3
berkeman
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BTW, they appear to be using both "M" and "m" for meters. Or am I misinterpreting something?
- #4
mjc123
Science Advisor
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Yes, just as they use j and J for joules. Pure carelessness.
- #5
sandmanvgc
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That threw me offmjc123 said:
- #6
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berkeman said:
They are all over the place with units. They also have [25 + 273K] as if only the second term has units. Totally bizarre.
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