1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
uysha [10]
3 years ago
11

is dimensionally correct relation necessarily to be a correct physical relation? explain with example.​

Physics
1 answer:
Andreas93 [3]3 years ago
4 0

Answer: hope it helps you...❤❤❤❤

Explanation: If your values have dimensions like time, length, temperature, etc, then if the dimensions are not the same then the values are not the same. So a “dimensionally wrong equation” is always false and cannot represent a correct physical relation.

No, not necessarily.

For instance, Newton’s 2nd law is  F=p˙ , or the sum of the applied forces on a body is equal to its time rate of change of its momentum. This is dimensionally correct, and a correct physical relation. It’s fine.

But take a look at this (incorrect) equation for the force of gravity:

F=−G(m+M)Mm√|r|3r  

It has all the nice properties you’d expect: It’s dimensionally correct (assuming the standard traditional value for  G ), it’s attractive, it’s symmetric in the masses, it’s inverse-square, etc. But it doesn’t correspond to a real, physical force.

It’s a counter-example to the claim that a dimensionally correct equation is necessarily a correct physical relation.

A simpler counter example is  1=2 . It is stating the equality of two dimensionless numbers. It is trivially dimensionally correct. But it is false.

You might be interested in
Water waves approach an underwater "shelf" where the velocity changes from 2.8 m/s to 2.1 m/s. If the incident wave crests make
otez555 [7]

Answer:

24°

Explanation:

sin(34°)/sin(x)=v2/v1

x=arcsin(2,1*sin(34°)/2,8)=24°

7 0
3 years ago
Physics help please! Offering 75 pts!
Nataliya [291]

Answer:

A

Explanation:

i got it from 2021 edge

5 0
2 years ago
Read 2 more answers
WHAT ARE THREE TECHNICAL ADVANCEMENTS
Snezhnost [94]

the iphone

the airplane

5G

6 0
2 years ago
A Navy vessel is traveling due north during wartime. A torpedo has been launched by an enemy directly toward the stern (rear) of
Anika [276]

Answer:

The correct option is;

B) No, the Navy vessel is slower

Explanation:

The speed of some torpedoes can be as high as 370 km/h. The average speed of a fast Navy vessel is approximately 110 km/h

Therefore, the torpedoes travel approximately 3 times as fast as the (slower) Navy vessel, such that the torpedo covers three times the distance of the Navy vessel in the same time and therefore, if the Navy vessel and the torpedo continue in a straight line (in the same direction) due north the vessel can not outrun the torpedo

Therefore, no the Navy vessel travels slower than a torpedo.

8 0
2 years ago
A rogue wave is a random monstrous wave that occurs unexpectedly in the ocean.
Tpy6a [65]

A wave with a large amplitude

a wave check

8 0
2 years ago
Read 2 more answers
Other questions:
  • if a water wave vibrates up and down 4 times each second,the distance between 2 successive crest is 5 meters, and the height fro
    13·2 answers
  • *a small object with a momentum of 6 kg∙m/s to the west approaches head-on a large object at rest. the small object bounces stra
    12·1 answer
  • Two resistors of 5.0 and 9.0 ohms are connected inparallel. A
    12·1 answer
  • The word centripeta/means "<br> -seeking."<br> Answer here
    9·1 answer
  • Can neutrons be accelerated in a cyclotron?Give reason.
    9·1 answer
  • -A: Find the force that must be exerted on the rod to maintain a constant current of 0.156 A in the resistor? (In mN)
    15·1 answer
  • What happens to the gravitation force between two objects that are 15 m apart, when one of them moves 3 m closer?
    9·1 answer
  • Consider a small raindrop and a large raindrop falling through the atmosphere. (a) Compare their terminal speeds. Both raindrops
    8·1 answer
  • When you heat ice on a hot stove, the ice melts. what is happening during this process?
    8·2 answers
  • TWO forces, one of 12N and another or 24N
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!