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    (Original post by viktorh)
    what did people get for the number of photons near the end? I got 2.89x10^15 per second
    I got something x10^15.... How did you work it out? I used e=pt and divided the energy by 1.6x10^-19
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    (Original post by viktorh)
    got 6.8 m/s for the speed of the carbon atom after the collision with the hydrogen atom. Seemed a little small to me but the carbon atom is massive in comparison so Im hoping that's right
    I plugged it back in and it was right, so yeah probably
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    (Original post by viktorh)
    got 6.8 m/s for the speed of the carbon atom after the collision with the hydrogen atom. Seemed a little small to me but the carbon atom is massive in comparison so Im hoping that's right
    I got the same
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    what did people get for the multiple choice question about the power output over x and y with the two resistors in series? I guessed 28mW after coming up with 0.003 watts with all my calculations
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    What did everyone get for force applied for the graph of u^2 and breaking distance questions? I got 73575 or something using a=8
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    (Original post by julesaquilina)
    I got something x10^15.... How did you work it out? I used e=pt and divided the energy by 1.6x10^-19
    If im being honest I was rushed for time so calculated E and then played around with possibilities until I got a large enough number :/
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    (Original post by Rectum_resizer)
    What did everyone get for force applied for the graph of u^2 and breaking distance questions? I got 73575 or something using a=8
    same
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    (Original post by julesaquilina)
    I got 70 something?
    also got 70 something, was conservation of momentum I believe?
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    (Original post by julesaquilina)
    I got 70 something?
    78
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    (Original post by julesaquilina)
    I got 70 something?
    I got 78.6 or 78.8 something like that,I use m1(u1)*m2u(2) equal m1(v1)*m2(v2) whare the initial velocity of second one is 0m/s
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    (Original post by viktorh)
    same
    I used a =16

    Posted from TSR Mobile
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    (Original post by Shmadm)
    also got 70 something, was conservation of momentum I believe?
    Did all you 70 people remember to use a negative value for velocity when the particle was going in the other direction?
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    (Original post by viktorh)
    same
    Forgot to divide 16 by 2 :/
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    (Original post by viktorh)
    same
    I got a=16 from the gradient of graph

    Posted from TSR Mobile
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    (Original post by viktorh)
    Did all you 70 people remember to use a negative value for velocity when the particle was going in the other direction?
    yeah
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    I thought the collision between the two objects was perfectly elastic - so you could use the conservation of kinetic energy?
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    (Original post by TheRandomGenius)
    I thought the collision between the two objects was perfectly elastic - so you could use the conservation of kinetic energy?
    you might have a point there
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    (Original post by viktorh)
    same
    How do you get equal 8 but I get 16 😞 whare I found gradient equal to 16
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    For the one with the asteroid I said the force because of the impulse.
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    (Original post by viktorh)
    you might have a point there
    I put momentum and energy
 
 
 
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