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Country Boy

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Everything posted by Country Boy

  1. Swansont: Yes, but like all such things it is not useful until everyone has agreed on a specific interpretation. That was done with "up" and "down" on earth long ago! Sirflappington: I would argue that in space there is NO "up" and "down"
  2. Few people will be willing to down load multiple files with no idea what is in them. Is it really too much trouble to type your problem? Then I guess it is not very important.
  3. It's NOT a law, it is a definition. A geometric point is not a physical object. It is an a mental concept that identifies a position and has no other properties.
  4. B says that, at some time in the future, I will have made 3 cakes and that I willstill have all three. A say that, at some time in the future, I will have made 3 cakes but that I might have disposed of (ate, gave away, threw away) one or more of them,
  5. 11, our standar "decimal system" is base 10. We have 10 digits, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 and create all numerals using those. For example immediately after "9" is 10= 1*10+ 0, then 11= 1*10+ 1, then 12= 1*10+ 2, etc. In "binary" we have only two digits, 0 and 1 and create all numerals using the. For example immediately after 1 is 10 which can be read as "2 and 0", then 11= 2+ 1= 3, then 100= 4+0*2+ 0*1, then 101= 4+ 0*2+ 1*1= 5, then 110= 4+ 1*2+ 0*1, etc. Notice that, just as 10,100, 1000, 10000 are "powers of 10" so in binary, 10= 2, 100= 4, 1000= 8 are "powers of 2".
  6. What do you mean by "have cryptocurrency"? If you mean "It is posssible to get some kind of cryptocurrency in that country" then they all do. If you mean "the country's government officially recognizes some kind of crytocurrency to be as negotiable as its regular currency" then none do!
  7. They are, however, biologically, the same plant! Yes, a shamrock is a clover with three leaves. Rarely the clover will have four leaves in which case it is called a "four leaf clover" rather than a "shamrock".
  8. -2(3+ (-3))= -2(0)= 0 So, by the distributive rule -2(3)+ (-2)(-3)= 0 Add 2(3) to both sides (-2)(-3)= 2(3).
  9. The problem is that you say you are talking about mathematics but you are actually talking about physics. You do not know what mathematics is and you do not know what physics is! There is "infinity" in mathematics but there is no "infinity" in physics.
  10. English IS my native language and even to me that sentence is nonsense!
  11. An hour? You expect a response within an hour? The samples were 500 g and you are asking about 1 kg= 1000 g so 2 samples. 1.2-1.5 mL=1.2- 1.5 g were aded to each sample so 2.8 to 3 g must be added to 1 kg. The liquid added was 2% trehalose so 2.8*.02- 3.0*.02= 0.056- 0.06 g of trehalose.
  12. No, "Jello" is a brand name- for a type of gelatine, not jelly. (Unless "jelly" is used in England to mean gelatine rather than a fruit spread for bread.)
  13. y as a function of x, yes, [tex]y= a cosh\left(\frac{x}{a}\right)[/tex]. But this is s, the arclength, as a function of [tex]\phi[/tex], then y as a function of x, yes- y= a cosh(x/a). But this is s, the arclength, as a function of phi, the angle the graph makes with the x-axis. It is the "Wethwell equation"- Catenary - Wikipedia
  14. Notice that the author does NOT use the same "dot" for multiplication and a decimal point. Multiplication is indicated by a centered dot ([math]2\cdot 4[/math]) while the decimal point is on the baseline (2.4).
  15. You, yourself, said, in your first post, "The author uses a dot for multipllication and as a divider between the ones column and the tenths column" (I would have said "as a decimal point"). In this problem the author is using it as a decimal point but you are interpreting it as a multiplication.
  16. It's not a matter of gravity suddenly "kicking in". A tiny mass produces a tiny gravitational force. Two very tiny masses will move toward each very slowly but with slowly increasing speed. Two larger masses will move toward each other with greater acceleration. It's simply a matter of when you are able to notice the acceleration. That depends on you not the mass.
  17. Yes, an "endothermic" reaction ((1) endothermic reaction definition - Bing) is one that takes heat from the environment, so feels cold. An "exothermic" reaction ((1) exothermic reaction definition - Bing) is one that produces heat.
  18. I have no idea whaty you are trying to say or what you are trying to ask. But certainly "200 ul" is NOT equal to "160 ul"! You say the ratio is "1/5000", "1/500", "1/250" OF WHAT? Apparently you want the "volume of antibody" to be 1/5000 or SOMETHING but 1/5000 or WHAT? My best guess at what you are trying to say: 1/5000 of something is 200 ul so the "something" is 200(5000)= 1000000 ul or 1 l. 1/500 or that 0. ul or l. 1/250 of that is 4000 ul or 0.004 l. (I assume your "ul" is a good replacemet for $\mu l$ or "microliters", one millionth of a liter.)
  19. I thought that but didn't post it!😄
  20. You should state that the three values of X are assumed to have equal probability so P(-1)= P(0)= P(1)= 1/3. Then E(g(x))= g(-1)/3+ g(0)/3+ g(1)/3= 0/3+ 1/3+ 2/3= 1. Zak100, it is not the "expected function" but the "expected value" of the function.
  21. The verb is "affect", "effect" is a noun. Gravity "affects" time and thus has an "effect" on time.
  22. "c/t" has unit of "distance over time squared" so is an acceleeration, not a distance.
  23. Think about the angle your legs make with smaller steps rather than longer steps. Both legs with be more nearly vertical at all times so will have a larger normal force.
  24. Sorry. I missed the word "open" in the original question. Yes, a non-empy OPEN set in a measure space is necessarily of positive measure.
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