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# Why is Reynold's number dimensionless?

Updated: 9/25/2023

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Q: Why is Reynold's number dimensionless?
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### What is Reynolds number?

Reynolds number Re is a dimensionless number that gives a measure of the ratio of internal forces to viscous forces and consequently quantifies the relative importance of these two types of forces for given flow conditions

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Correct: it is a dimensionless number.

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A dimensionless number has no units. The units of all variables that compose the dimensionless number (product or ratio) must cancel each other.

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If a quantity is "dimensionless", that means it has no units, and it's just a number.

### Describe Reynolds number and it's significance?

REYNOLDS NUMBER:It gives measure of ratio of the inertial forces to the viscous forces & it is a dimensionless quatity.Physical significance:1.It signifies the relative predominance of inetia to viscous forces.2.It is very useful in determining whether the flow is laminar or turbulent.

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32 is a pure number (integer) and is dimensionless.

### What are dimensionless numbers?

the dimensionless numbers have the definition as that of dimensionless groups, and have all the properties which dimensionless groups have.

### What number is equivalent to 1 cup?

A pure dimensionless (without units) number is never equivalent to a number with a unit.

### What is the phone number of the Reynolds Community Library in Reynolds?

The phone number of the Reynolds Community Library is: 478-847-3468.

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### What is 60 and hour?

60 is a dimensionless number. An hour is a unit for measuring time.

### Is the magnitude of a vector quantity a dimensionless number?

Yes, the magnitude of a vector is a scalar.