Recent content by IsrTor

  1. I

    Square root operation and scales

    this is a strange problem easy to solve but I am having trouble understanding it intuitivly. Assume we choose a location point and name it 0. Next, in arbitrary direction and distance we place the number 1. Hence, we have created a scale(number line) that extends as much as we like. Now we...
  2. I

    Can the set of x be found for -1 ≤ 1/(1+cosx) ≤ 1?

    Homework Statement solve the inequality: -1\leq 1/(1+cosx) \leq1 The Attempt at a Solution firstly cosx does not equal -1 but you'll see doesn't help much -1<cosx<1 0<cosx+1<2 that makes the above equation 1/(1+cosx) between 0.5 and infinity. but I have no...
  3. I

    Equilibrium of Charged Particles on an Axis

    you don't need to get F=0. you need to make F=0. that's when the two forces will equal. Just from looking you get understand that in cases C and D you will not get equalibrium on the left side. In both cases A and B there will be. How do I know? well because you can assume the distance between q...