Number question, addition and multipulcation

  • Thread starter Thread starter studentxlol
  • Start date Start date
  • Tags Tags
    Addition
AI Thread Summary
The discussion revolves around the existence of numbers between positive and negative values, specifically questioning the concept of a number that links them. It highlights that 2 is a positive number and discusses basic arithmetic operations involving negative and positive integers. The conversation also touches on the idea of finding a value, represented as "x," that lies between -2 and +2, with the conclusion that 0 serves as that value. Participants express confusion regarding the original question and the necessity of identifying a number "between." Ultimately, the dialogue emphasizes the relationship between positive and negative numbers in arithmetic.
studentxlol
Messages
40
Reaction score
0
deleted
 
Last edited:
Physics news on Phys.org
I'm kind of confused by your question, but:
2 exists and it's positive (2=+2)
and if x=1 then -1+x+1=1
and -1x1=-1
 
sparkle123 said:
I'm kind of confused by your question, but:
2 exists and it's positive (2=+2)
and if x=1 then -1+x+1=1
and -1x1=-1

deleted
 
Last edited:
I don't quite understand your question.
What would be the use of having a number "between"?

studentxlol said:
-1, 1, +1
-2, 2, +2

What would these be?

(-1) + (-1)=~?
(1) + (1)=~?
(+1) + (+1)=~?

studentxlol said:
I'm thinking like there has to be something in between a positive and negative number that links those two numbers together so like.. -2, x +2 what is x??

A value between -2 and 2 would be 0.
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'
Figure 1 Overall Structure Diagram Figure 2: Top view of the piston when it is cylindrical A circular opening is created at a height of 5 meters above the water surface. Inside this opening is a sleeve-type piston with a cross-sectional area of 1 square meter. The piston is pulled to the right at a constant speed. The pulling force is(Figure 2): F = ρshg = 1000 × 1 × 5 × 10 = 50,000 N. Figure 3: Modifying the structure to incorporate a fixed internal piston When I modify the piston...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top