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  1. Thought blocker

    Physics: Post your doubts here!

    Question ?
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  3. Thought blocker

    Physics: Post your doubts here!

    32) V = P / I = C 33)
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    10 mins . _ .

    10 mins . _ .
  5. Thought blocker

    Physics: Post your doubts here!

    18) power output P=IV 23 x 320 =7360 W power input Power=energy/time so P=mgh/t and m/t is= 200 kgs-1 so 200 x 9.81 x 8 =15696 W output/input x 100 7360/15696=0.468 nd 0.498 x 1ooo =46.8 so answer is D
  6. Thought blocker

    Physics: Post your doubts here!

    What type of help you need ?
  7. Thought blocker

    Physics: Post your doubts here!

    I didn't took it seriously.. :p I neva take things seriously.. :p
  8. Thought blocker

    :P Ferar!

    :P Ferar!
  9. Thought blocker

    Physics: Post your doubts here!

    Calm down... I am doing my preparations along with helping you all... After all I am a human!
  10. Thought blocker

    Physics: Post your doubts here!

  11. Thought blocker

    Physics: Post your doubts here!

    Sorry Zarah for the delay :( 11) 15) Power = Force * velocity Power = (1000 + 1000*10) * 0.5 Power = 11000 * 0.5 Power = 5500 W = 5.5 kW 17) P = ρgh (110000 - 100000) = 1020*9.81*h h ≈ 1.00 mm
  12. Thought blocker

    Physics: Post your doubts here!

    10) Force = mass times acceleration total mass = 4m so, F=4ma a=F/4m F(Y)=3m x F/4m = 3F/4 40) Ok..This is Tricky But involves Math Skills..!! Look Proton Has Charge of (+)1.! We need to end Up at One Using Values of Up quark and Down Quark.! If U Take 2 UpQuarks = (+)(2/3) * 2 = (+)(4/3) And...
  13. Thought blocker

    Physics: Post your doubts here!

    Here R = V/I so, as R increase, V increases and I decreases... So here Variable resistor is connected in series with other resistor, so its resistance would decrease hence V decreases And Ammeter readings will be unchanged as it is in parallel... :)
  14. Thought blocker

    Physics: Post your doubts here!

    B is the answer ? If yes, then use the formula : 0.5 * F * extension 0.5 * 17 * (30 * 10 ^-2) = 2.6
  15. Thought blocker

    Physics: Post your doubts here!

    s13_13 15) Use formula : 0.5 * F * extension 0.5 * F * ((40) - (40*5)) ≈ 1.3 J 16) IDK 19) Solved 29) F = qV / D F = [(1.6 x 10^-19) x (80)] / (5*10^-2) ≈ 2.6 x 10^-16 31) I = V / R I = ( 2 - 1 ) / ( 9+2+1 ) I = 0.083A 34) The wires are connected in parallel - that's the first thing you...
  16. Thought blocker

    Physics: Post your doubts here!

    5) sagar's edit :P Okay, so what we need to find out is the percentage uncertainty in the value of the volume of the sphere with a radius measurement of r = 5.00 mm ± 0.01 mm. The formula for volume of a sphere as a function of radius is 4πr³/3. Therefore, we are multiplying r into r into r to...
  17. Thought blocker

    Physics: Post your doubts here!

    15) for a couple, there has to be two equal forces acting in opposite directions. A is wrong because the forces are acting in the same direction. D is wrong because the forces are not acting in opposite directions. then why is C wrong? right? well C is wrong because two forces are in opposite...
  18. Thought blocker

    Physics: Post your doubts here!

    14) moment = force x distance clockwise moment = anticlockwise moment W x a + F x h = W x 2a
  19. Thought blocker

    Physics: Post your doubts here!

    s13_12 7) Total speed will be 10 + 50 so s = (v -(-u)) / 2 * t so s = 60/2 * 2 = 600m 9) Mass of wind coming in contact with the blades per second = density * speed * area = 475.2 kg/s F = mv-mu/t As it is 475.2 kg/s, we will use F = 475.2*0 - 475.2*33/1 = D 20)...
  20. Thought blocker

    Physics: Post your doubts here!

    LAST TIME ANSWERING :P The question states that "X is measured with a percentage uncertainty of ±1 % of its value at all temperatures." meaning that the percentage uncertainty is unchanged, so A and B is eliminated. then you need to apply some logic here, will the actual uncertainty get bigger...
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