Recent content by Mr. Mathmatics

  1. M

    How does relative velocity affect the time it takes for two objects to meet?

    1. Yes, now I understand d= t x s so .124 = -10 x something. or .0124 hours or 44.64 seconds. Cool thanks 2. The other one would be V[SIZE="2"]shopper = d x 20 seconds correct? But if you did that the velocity of the shopper is 0 (she is not moving) so distance has to equal zero which is not...
  2. M

    How does relative velocity affect the time it takes for two objects to meet?

    Homework Statement 1.How long, in seconds, does it take an automobile traveling 50.0 km/h to become even with a car that is traveling in another lane at 40.0 km/h if the cars' front bumpers are initially 124 m apart? 2.A shopper in a department store can walk up a stationary (stalled)...
  3. M

    Solve Natural Log Problem: 3^x when 2^x=3

    What Kummer said was correct about the absolute value of two. You can't just cancel it out, you may cancel it out though if it is (square root of x)^2 as long as the radical symbol is inside the parentheses then you may cancel out.
  4. M

    Simplifying Trig Expressions and cofunctions

    The identities are the things like sec^2x equals 1+Tan^2x, etc. the basic ones. As for the original form, that's what I'm trying to figure out. I think I have to put the problem in terms of Sin and Cos to simplify it. I'm hoping that's the answer at least.
  5. M

    Increasing temperature of an organ pipe

    Jumping off what mgb phys was saying the energized particles move faster and like previously stated have a better chance of hitting off the walls and other particles more often. This energy came from the heat increase and therefore the heat increase would increase the frequency. Unless another...
  6. M

    What Are the Latest Environmental and Chemical Cleaning Innovations?

    If an answer is still needed, leaning things such as oil and nuclear power plants uses many chemicals. Oil refineries are a great example of this as they go through about 10 chemicals on average to be cleaned. Even drinking water uses chlorine as a cleaner (although less often), if that...
  7. M

    Simplifying Trig Expressions and cofunctions

    Homework Statement Sec^2x X cotx --------------------- csc xAlso, if anyone wants to explain cofunction identities and how to use them, to be that would be very much appreciated. Homework Equations The Pythagorean identities as well as the basic identities of trig functions. Any...
  8. M

    Half-Life Question: Thorium-234 (24 days)

    You technically have enough information to start right there. As Sleek said you may do it manually. For example... In 0 days 280 grams In 24 days you will have 140 etc., It may end up though that the numbers of days may not be a multiple of 24 which means you may end up doing a bit of...
  9. M

    Find a Polynomial Function of Degree 5 with Roots: 2, √7, 5i, and -5i

    chanvincent: I'm pretty sure she wants to keep the polynomial away from imaginary numbers. Ahhh, good point I guess I can find any polynomial with those roots giving it any multiplicity I want since it says "a" polynomial function. Thanks for the speedy replies both of you. But now I have a...
  10. M

    Find a Polynomial Function of Degree 5 with Roots: 2, √7, 5i, and -5i

    Homework Statement Find a Polynomial function of degree 5 whose zeros are: 2, radical 7, and 5i Homework Equations Multiplying rootsThe Attempt at a Solution Hello, well it's my first time at these forums so just following the template given. Thanks for any help by the way I'm just so...
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