Recent content by wiraimperia

  1. W

    Solving an equation which should give an animal's foraging radius

    No, I think simply distance = energy / (energy/m) then you will get 3.9 10^6 m. The key is wrong I think...
  2. W

    Simulating a pool system - concentrations help

    1 ppm = 1 mg/L Given 125 ppm Wanted to be reduced to 1 ppm You have no data of the amount of Chlorine, e.g. 1L, you have and the amount of water you need in the pool...
  3. W

    Reactions, Organic and Medical Substances

    Hello again, sorry I had been idle for months. At that time I was relatively active in the Physics section. Thank God now I'm at the Fac. of Medicine, University of Sriwijaya. In the beginning of my college we had a Chemistry Lab Practice and are assigned to make the report, in which the...
  4. W

    Finding the general expression of the nth term

    Ouw... I think you can use the Sn to calculate the Un...
  5. W

    Sum of the Values of X, Exponential Equation

    I mean if it has 2 solutions, then we are asked X1 + X2, if it has 3, then X1 + X2 + X3, and so on...
  6. W

    Sum of the Values of X, Exponential Equation

    Homework Statement (4x)^(1 + log(base 2) (x)) = 8(x^3) What is the sum of the values of x that fullfill that equation? A) 2.5 B) 2.0 C) 1.5 D) 1.0 E) 0.5Homework Equations Use the exponential equation only and make the lower one (exponented) 1.The Attempt at a Solution (4x) = (2 x^(1/2))^2...
  7. W

    Expressing A Vector Given Another Vectors

    We refer to the multiple choice answers... Not a made-up answer... And I'm still confused why it is (1/2)a + (3/4)b :confused:
  8. W

    Expressing A Vector Given Another Vectors

    Homework Statement ABCD is a square (AB = AD = BC = CD). The point P and Q are located in the middle of BC and CD. If AP and AD is expressed by the name vector a and b, then AQ = ... A) (1/2)a + (3/4)b B) (1/3)a + (2/3)b C) (3/4)a + (1/2)b D) (2/3)a + (1/3)b E) (2/3)a + (3/4)b...
  9. W

    How Does a Calor Engine Power a 200V Generator at Different RPMs?

    Homework Statement Hello, let me introduce myself first. I am Wira, a Senior High School alumnus in Indonesia. I am currently preparing for my university entrance exam. This is a problem which I get stuck in, and can you help me with it? Indonesian: Suatu mesin kalor yang bekerja dengan siklus...
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