Recent content by i25959341

  1. I

    Some question from the oxford entrance test

    24. A black box has three electrical connections labelled A, B, and C, arranged in a triangle as shown below. A b c The box contains three components: a resistor, a small capacitor and a diode. You know that one...
  2. I

    Some question from the oxford entrance test

    thabk you
  3. I

    Some question from the oxford entrance test

    wat is the question saying wen it is asking u to take appriopriate limit??
  4. I

    Some question from the oxford entrance test

    okokok thank you dat s the direction i was thinking but i don't kno whether it s the right one (d) Most substances expand with increasing temperature, and so a metal rod will expand in length by a fraction ®dT if the tem- perature is changed by dT, where ® is called the coe±cient of linear...
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    Some question from the oxford entrance test

    14. You should already be familiar with the mathematical treatment of an ideal pendulum, in which the pendulum bob is modeled as a point mass on the end of a rigid rod of negligible mass. In this problem you will consider the behaviour of more complex types of pendulum. You will be given all the...
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    Solving OCR M2 Questions: Bullets and Equations

    can u explain to the trajectory equation and its significance and stuff cos i am doing M2 myself without a teacher so i m finding it difficult to grasp some of the important concept and implications from the equations. like how to use it and why??
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    Solving OCR M2 Questions: Bullets and Equations

    erm the equation look like the trajectory the problem is these quations assumsed that the particle is on ground level, so shud i just do it that way then?? or make adjustment to the equations given like greatest height reached , time returning to its originalheight and range on horizontal...
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    Solving OCR M2 Questions: Bullets and Equations

    Homework Statement some ocr m2 questions Homework Equations - P] ] ] ] b] ] ]...
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    How Does Distance from Infrared Source Affect Photocell Output?

    'A photoresistor is made of a high resistance semiconductor. If light falling on the device is of high enough frequency, photons absorbed by the semiconductor give bound electrons enough energy to jump into the conduction band. The resulting free electron (and its hole partner) conduct...
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    How Does Distance from Infrared Source Affect Photocell Output?

    Homework Statement investigate how output from photocell depends on distance from infrared point source am required to design a labratory experiment to investigate how the output from a photocell depends on its distance from a point source of infrared radiation. i am proposing my idea and i...
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    How does photocell output change with distance from infrared point source?

    hello hello reply please some1 please wake up or something loool
  12. I

    How does photocell output change with distance from infrared point source?

    mannn i think i am wrong here but i just guessing
  13. I

    How does photocell output change with distance from infrared point source?

    assuming each photon has archeieved the threshold frequency or something? but i think that wud depend on the sensitivity of my LDR right?
  14. I

    How does photocell output change with distance from infrared point source?

    THEREFORE, since amp is number of charged particle per second or something. the current of an infrared hitting my resistor and the current of my resistor without any light, the differences is the number of electrons released by the infrared. and since according to photoelectric effect each...
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    How does photocell output change with distance from infrared point source?

    'A photoresistor is made of a high resistance semiconductor. If light falling on the device is of high enough frequency, photons absorbed by the semiconductor give bound electrons enough energy to jump into the conduction band. The resulting free electron (and its hole partner) conduct...