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    Physics Questions!

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    Ahmed
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    Physics Questions!

    Post by Ahmed on Sun Dec 27, 2009 12:01 am

    A 88.9 kg astronaut is working on the en-
    gines of a spaceship that is drifting through
    space with a constant velocity. The astronaut
    turns away to look at Earth and several sec-
    onds later is 30.7 m behind the ship, at rest
    relative to the spaceship. The only way to re-
    turn to the ship without a thruster is to throw
    a wrench directly away from the ship. The
    wrench has a mass of 0.502 kg, and the astro-
    naut throws the wrench with a speed of 24.3
    m/s.
    How long does it take the astronaut to reach
    the ship?
    Answer in units of s.

    A(n) 2.96 kg sphere makes a perfectly in-
    elastic collision with a second sphere that is
    initially at rest. The composite system moves
    with a speed equal to one-third the original
    speed of the 2.96 kg sphere.
    What is the mass of the second sphere?
    Answer in units of kg.


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    Egyptian Gazelle
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    Re: Physics Questions!

    Post by Egyptian Gazelle on Sun Dec 27, 2009 3:43 am

    say whaaaat? o.0


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    Re: Physics Questions!

    Post by The Banker on Wed Dec 30, 2009 5:22 pm

    sorry man i'm gonna do mechanics after jan :S
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    Re: Physics Questions!

    Post by Steve on Wed Dec 30, 2009 5:23 pm

    x

    23

    and 1942
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    Ahmed
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    Re: Physics Questions!

    Post by Ahmed on Wed Dec 30, 2009 5:32 pm

    I already solved it. Thanks eve Wink


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    Re: Physics Questions!

    Post by Steve on Wed Dec 30, 2009 5:36 pm

    no problem, just ask if you need more help, i know its hard being a dumb guy.
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    Re: Physics Questions!

    Post by Ahmed on Wed Dec 30, 2009 5:45 pm

    I didn't use your correct answers u idi0t!

    I said IIII answered them Wink


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    Re: Physics Questions!

    Post by Steve on Wed Dec 30, 2009 5:46 pm

    well put my answers just in case, i dont want you to look silly Razz
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    Re: Physics Questions!

    Post by The Banker on Wed Dec 30, 2009 5:51 pm

    Steve ur actually starting to sound like a girl o.O
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    Re: Physics Questions!

    Post by Steve on Wed Dec 30, 2009 5:56 pm

    well i gotta fit in marwa.
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    Re: Physics Questions!

    Post by Ahmed on Wed Dec 30, 2009 5:57 pm

    Go play ring around the rosey eve Smile


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    Re: Physics Questions!

    Post by Egyptian Gazelle on Thu Dec 31, 2009 2:40 am

    Girls don't really like that game Razz
    Its for babies mostly haha
    Actually, do you know the real meaning behind it?


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    *Egyptianess*

    see these eyes?
    thats right
    there from Egypt!thats why there A M A Z I N G ! and what!?

    "In these days, a man who says a thing cannot be done is quite apt to be interrupted by some idiot doing it."

    The word n00b is soooooooooooo overrated!
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    Steve
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    Re: Physics Questions!

    Post by Steve on Thu Dec 31, 2009 2:43 am

    is it about the bubonic plague?
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    Egyptian Gazelle
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    Re: Physics Questions!

    Post by Egyptian Gazelle on Thu Dec 31, 2009 2:58 am

    Yup a.k.a the Black Death Razz

    All credit to Steve (ahem I mean Eve)


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    *Egyptianess*

    see these eyes?
    thats right
    there from Egypt!thats why there A M A Z I N G ! and what!?

    "In these days, a man who says a thing cannot be done is quite apt to be interrupted by some idiot doing it."

    The word n00b is soooooooooooo overrated!
    avatar
    The Banker
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    Re: Physics Questions!

    Post by The Banker on Thu Dec 31, 2009 8:08 pm

    that was da only part of history i enjoyed learning about...
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    Re: Physics Questions!

    Post by The Banker on Thu Dec 31, 2009 8:27 pm

    A large mass bobs up and down on a heavy spring. Initially the mass is at the top 20 cm above its lowest position. The magnitude of its maximum speed is 31 cm/s.



    What is the amplitude for this motion?
    A. 10 cm
    B. 20 cm
    C. 31 cm
    D. 40 cm
    E. 62 cm

    What is the angular frequency for this motion?
    A. 0.00 p rad s-1
    B. 0.25 p rad s-1
    C. 0.50 p rad s-1
    D. 0.75 p rad s-1
    E. 1.0 p rad s-1
    Solution

    for da first one i got A which is right...
    for da secong one da answer is E... why i have no idea.
    da answer doesn't make sense man...
    da answer:-
    v = -wA sinwt

    Maximum value when sin = 1

    |vmax| = wA
    w = |vmax|/A = 31/10 = 3.1 = 1.0p s-1

    does it even make sense?? o.O
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    Re: Physics Questions!

    Post by The Banker on Tue Jan 05, 2010 12:56 pm

    just started mechanics 2day
    lolz, its well good Very Happy
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    Egyptian Gazelle
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    Re: Physics Questions!

    Post by Egyptian Gazelle on Tue Jan 05, 2010 5:43 pm

    does it even make sense?? o.O
    Thats a good question! I have no idea haha.........Its fun to wrte in this font!


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    *Egyptianess*

    see these eyes?
    thats right
    there from Egypt!thats why there A M A Z I N G ! and what!?

    "In these days, a man who says a thing cannot be done is quite apt to be interrupted by some idiot doing it."

    The word n00b is soooooooooooo overrated!
    avatar
    Steve
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    Re: Physics Questions!

    Post by Steve on Tue Jan 05, 2010 6:17 pm

    i looked further into that quiz and the answers are...

    E A T B A B I E S T H E Y M A K E Y O U S T R O N G

    i thought it was kinda odd Razz
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    Egyptian Gazelle
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    Re: Physics Questions!

    Post by Egyptian Gazelle on Tue Jan 05, 2010 8:28 pm

    Wait, are you serious!?!??!?!? 0.o


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    *Egyptianess*

    see these eyes?
    thats right
    there from Egypt!thats why there A M A Z I N G ! and what!?

    "In these days, a man who says a thing cannot be done is quite apt to be interrupted by some idiot doing it."

    The word n00b is soooooooooooo overrated!
    avatar
    Steve
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    NH Member

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    Re: Physics Questions!

    Post by Steve on Tue Jan 05, 2010 8:30 pm

    .... no Razz
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    Egyptian Gazelle
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    Re: Physics Questions!

    Post by Egyptian Gazelle on Tue Jan 05, 2010 8:44 pm

    Ohhhhhhh...woops LOL i'm so gullable hehe


    _________________



    *Egyptianess*

    see these eyes?
    thats right
    there from Egypt!thats why there A M A Z I N G ! and what!?

    "In these days, a man who says a thing cannot be done is quite apt to be interrupted by some idiot doing it."

    The word n00b is soooooooooooo overrated!
    avatar
    Ahmed
    NH Admin
    NH Admin

    Number of posts : 51452
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    Re: Physics Questions!

    Post by Ahmed on Tue Jan 05, 2010 8:58 pm

    Very dear Razz

    Has this topic ended?


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    Egyptian Gazelle
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    Re: Physics Questions!

    Post by Egyptian Gazelle on Tue Jan 05, 2010 9:06 pm

    Yeah I think you can close it.


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    *Egyptianess*

    see these eyes?
    thats right
    there from Egypt!thats why there A M A Z I N G ! and what!?

    "In these days, a man who says a thing cannot be done is quite apt to be interrupted by some idiot doing it."

    The word n00b is soooooooooooo overrated!

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