0
Anonymous Posted 12 years ago
Grammar
A physics sentence translation
Hello, I couldn't figure what the difference of two terms here. The sentence is
"The dimensionally equivalent newton-metre (N•m) is sometimes used as the measuring unit for work, but this can be confused with the unit newton-metre, which is the measurement unit of torque"
What does dimensionally equivalent exactly means?
"The dimensionally equivalent newton-metre (N•m) is sometimes used as the measuring unit for work, but this can be confused with the unit newton-metre, which is the measurement unit of torque"
What does dimensionally equivalent exactly means?
Top answer
If two units are "dimensionally equivalent", it means they are really the same unit expressed in different ways. This becomes apparent when they are expressed in base units. For example, J (joules) and N·m (newton-metres) both resolve to kg·m 2 /s 2 .
- If two units are "dimensionally equivalent", it means they are really the same unit expressed in different ways.
- This becomes apparent when they are expressed in base units.
- For example, J (joules) and N·m (newton-metres) both resolve to kg·m 2 /s 2 .
Get the Weekly English Kit 📬
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
4 Answers
0
If two units are "dimensionally equivalent", it means they are really the same unit expressed in different ways. This becomes apparent when they are expressed in base units. For example, J (joules) and N·m (newton-metres) both resolve to kg·m2/s2.
00
0
Anonymousso they are the same but used for different expressions?They are used in different contexts -- by convention, or for clarity or convenience. For example, on a label showing amount of energy in food, it would be weird to express energy in N•m rather than joules (or calories), even though they are equivalent.
00
Related Questions