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  1. Thought blocker

    •The work we put into the system is the only input to the system; no other influence is exerted...

    •The work we put into the system is the only input to the system; no other influence is exerted by us, so the only input to the system is the work done by our force = F. This work = F.s = Fs. <-- I guess you know this formula :P
  2. Thought blocker

    •However, potential energy does change - the car moves up a height of mgs * sin(α) (Since ΔP.E...

    •However, potential energy does change - the car moves up a height of mgs * sin(α) (Since ΔP.E. = mgΔh, and sin(α) = Δh/s, Δh = s * sin(α) and ΔP.E. = mgs * sin(α)). •Therefore, the useful energy output = mgs * sin(α)
  3. Thought blocker

    16) •Since friction does not do any work (we can assume this, and even otherwise it is not...

    16) •Since friction does not do any work (we can assume this, and even otherwise it is not useful output so it doesn't count) there is no energy lost to internal energy.
  4. Thought blocker

    4)...

    4) https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xap1/t31.0-8/1529795_264812890369658_1076795143274600193_o.jpg
  5. Thought blocker

    4) lemme send u snap

    4) lemme send u snap
  6. Thought blocker

    •Since the kinetic energy of the car doesn't change and remains at v, there is no change in the...

    •Since the kinetic energy of the car doesn't change and remains at v, there is no change in the kinetic energy of the car.
  7. Thought blocker

    Aww... :(

    Aww... :(
  8. Thought blocker

    16) The Efficiency = (Useful Output energy)/(Total Input Energy).

    16) The Efficiency = (Useful Output energy)/(Total Input Energy).
  9. Thought blocker

    HE WILL BE BACK AFTER 11th JUNE Dont go, please.

    HE WILL BE BACK AFTER 11th JUNE Dont go, please.
  10. Thought blocker

    4) 10 ms = 1cm , total 8.5 waves in 6 cm, so if 10 ms = 1 cm so 6 cm = 60 ms and 60 ms = 0.006 s...

    4) 10 ms = 1cm , total 8.5 waves in 6 cm, so if 10 ms = 1 cm so 6 cm = 60 ms and 60 ms = 0.006 s So in 0.06 s there are 8.5 waves. so in 1 wave what is the value of time, that will be 0.00706 s As you know f = 1 / T, f = 1 / 0.00706 = 141 that is 140 approx so B
  11. Thought blocker

    Hey are you there ?

    Hey are you there ?
  12. Thought blocker

    I will give you detail explanation on 4) leave it right now For 14) Its clearly written in our...

    I will give you detail explanation on 4) leave it right now For 14) Its clearly written in our book, do you use course book ?
  13. Thought blocker

    15) Power = Force * velocity Power = (1000 + 1000*10) * 0.5 Power = 11000 * 0.5 Power = 5500 W =...

    15) Power = Force * velocity Power = (1000 + 1000*10) * 0.5 Power = 11000 * 0.5 Power = 5500 W = 5.5 kW Answer: B
  14. Thought blocker

    ._. Kuch ni hua ._.

    ._. Kuch ni hua ._.
  15. Thought blocker

    For q4 wait, I typed and it was something error of 420 cha.. And I selected the whole damn thing...

    For q4 wait, I typed and it was something error of 420 cha.. And I selected the whole damn thing and pressed x instead of ctrl + x :/
  16. Thought blocker

    Ok

    Ok
  17. Thought blocker

    what ?

    what ?
  18. Thought blocker

    He wants to focus in his studies/

    He wants to focus in his studies/
  19. Thought blocker

    He wants to focus in his studies/

    He wants to focus in his studies/
  20. Thought blocker

    ask

    ask
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