answersLogoWhite

0


Best Answer

The negative sign in the equation is conventional and is added because the pressure gradient is negative in thedirection of flow

User Avatar

Wiki User

11y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why do need a negative sign in Darcy's law?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Hooks law f equals -kd why is k negative?

k is never negative. d might be negative but that is sign convention for either tension or compression


What is the theory states that electrons flow from negative to positive?

You don't need a "law of current" from that, but you can derive it from Ohm's Law.


Why a negative sign appears in the equation of faradays law of electromagnetic induction?

the inducedd e.m.f and the change in magnetic flux have opposite direction


What is Negative Law?

Negative Law is based on absolute DOGMA instead of Natural process (try and error). Negative law not recognize revision of the law. It is dogmatic in nature. Positive law is subject of changing for more better and better law. Negative Law is obsolete DOGMA according to their believer usually in religious community.


Is it required by law to play the national anthem?

Yes, they need to play the national anthem for the following activities: Flag ceremony Formal programs Sign-on and Sign-off Before watching movie in cinema Abuse of this may violate the appropriated law.


What can the president do to a law of congress that he does not like?

refuse to sign it into law.


What is the law of signs at Florida pools?

law og sign


A bill becomes a law after?

after the: mayor governor president sign it into law


Who in the US must sign a bill before it becomes law based on the US Constitution?

In order to become laws, bills must be passed by both houses of Congress. The constitution does not specify that anyone must sign it., but the fact that it passed must be certified in some way. It then must be sent to the president, but he does not need to sign it for it become law, if Congress stays in session for 10 days after he gets it.


What can the president do if congress passes a law?

he can sign it and make it a law or he can veto it(reject)


Define law of demand?

the law of demand state there is a negative or inverse relation ship


What is the name of the mathematical law that states that a negative times a positive equals a negative?

Integer Rules