Recent content by sachin

  1. sachin

    Notion of an integral as a summation

    While analyzing the foundation of calculus, I am finding that the notion of an integral is a special form of summation of differentials and an indefinite integral is also an integral with limits 0 to x what is conventionally written without the limits, the notation is given in the image, Pl...
  2. sachin

    Variation of escape velocity with equal surface gravity

    so, hope i can conclude that the given question is wrong, thanks.
  3. sachin

    Variation of escape velocity with equal surface gravity

    the question says "There are two Planets, each with the same surface gravity, but Planet 1 has a greater radius and is less massive then Planet 2. Which of these planets has a greater escape velocity? " (A) Planet 1 (B) Planet 2 (C) Both have the same escape velocity because surface gravity is...
  4. sachin

    Why Does Calculating Torque at the Ladder's Contact Point Not Work?

    I am trying to get the torque about the point of contact of the ladder on the ground = mg x l/2, but it is not leaving me anywhere
  5. sachin

    How can a transistor behave as a switch in the saturated region?

    also why do we take the output voltage across the the collector and emitter junction and not across the external load resistance, is the external resistance also called the output resistance of the transistor.
  6. sachin

    How can a transistor behave as a switch in the saturated region?

    I have a query, while forward biasing the base emitter junction, we give a voltage just more than the barrier potential what is around 0.7 volt, so if we give say 0.9 volt then 0.7 volt is used in breaking the barrier and the rest 0.2 remains for the current to flow, does the PN junction diode...
  7. sachin

    How can a transistor behave as a switch in the saturated region?

    berkeman thanks for your reply, may i know for the transistor to work why do we need a forward biasing in the base emitter region, cant it be done if we connect just a high voltage battery across the emitter and collector, taking to be a npn transistor, the collector's electrons are pulled by...
  8. sachin

    How can a transistor behave as a switch in the saturated region?

    how can a transistor behave as a switch in the saturated region when it is in forward bias mode in the saturation region and the collector current may become zero, when a transistor is used as a switch im the satruation in region, it is having maximum current but as it is forward biased as it...
  9. sachin

    Is (y + z)x1 = (y1 + z1)x the equation of a straight line in 3D space?

    so if a standard 12 child asks if y = x is a line or a plane, what should be the answer ?
  10. sachin

    Is (y + z)x1 = (y1 + z1)x the equation of a straight line in 3D space?

    did not understand fully, is it like y = x fulfills the equation of a plane in 3d space and a line in 2d space ?
  11. sachin

    Is (y + z)x1 = (y1 + z1)x the equation of a straight line in 3D space?

    Where did i go wrong in my assumption, is the mistake started when i added the equations or before that also in the post y = (y1/x1) x, z = (z1/x1) x, y + z = (y1/x1) x + (z1/x1) x,
  12. sachin

    Is (y + z)x1 = (y1 + z1)x the equation of a straight line in 3D space?

    2D line is a two dimensional line what is plotted in xy plane, we have y = mx + c and all as equations.
  13. sachin

    Is (y + z)x1 = (y1 + z1)x the equation of a straight line in 3D space?

    my concern is to give equation of a line a simpler form than bothering the ratios, what i found out from u is a single equation is always a plane, so y = x is not a 2d line but a plane ?
  14. sachin

    Is (y + z)x1 = (y1 + z1)x the equation of a straight line in 3D space?

    i have just cross multiplied the terms in the equation of a line in (x-x1)/a = (y-y1)/b = (z-z1)/c , how can i get a plane from there ? as that will mean (x-x1)/a = (y-y1)/b = (z-z1)/c was the equation of a plane, is my assumption correct
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