based

  1. H

    What is the current based on the graph?

    The graph is current produced when the certain light bulb connected to voltage. When V = 12Volt, current = 3.5 A So the R for light bulb = 3.5 ohm Now, that certain light bulb connected to 5ohm resistor and voltage 12 V. I guess that Power consumed by the light bulb is P. P = I^2R = V^2/R =...
  2. D

    Sinusoid extraction based on beating pattern

    I would like to ask if someone might have a tip how to approach a problem of sinusoidal signal separation in a musical recording sample. There is a recording at 44100Hz of 1,3sec (56855 samples) length and we have the knowledge that up to approx. smp 17100 there is just one sinusoid (1-st piano...
  3. D

    Extraction of sinusoidal waves based on beating pattern

    I would like to ask if someone might have a tip how to approach a problem of sinusoidal signal separation in a musical recording sample. There is a recording at 44100Hz of 1,3sec (56855 samples) length and we have the knowledge that up to approx. smp 17100 there is just one sinusoid (1-st piano...
  4. D

    distance based transparency

    Hi, Is there any optical sheet or film which is transparent to object only if the object is touching or extremely near to the sheet otherwise it acts as opaque sheet? for example, If we look through a transparent glass window of an apartment, from a distance in day light, we can’t see...
  5. H

    Wave experiment - origin of a wave based on 3 points

    Trying to help my kid with an experiment. In a tank of water, if you drop a marble it creates a circular wave. If you have 3 sensors in that tank that can detect the arrival of that wave, could you mathematically calculate the position where the object was dropped into the tank based on the...
  6. T

    DIference of Table based on Temperature and Table based on Pressure

    Hi guys, I was interpolating to find a specific volume of a gas in a table based on temperature and also in a table based on pressure... but the results are diferente! Why? Thank you.
  7. H

    question based on Kirchoff's laws

    A cell supplies a current i1 through a coil of resistance R1,a current i2 through a coil of resistance R2.What is the e.m.f. and the resistance of the cell in terms of i1,i2,R1 and R2 ? I guess this means the resistors are in parallel.So using ,Kirchoff's(hope I spelt it right) 2nd law, E...
  8. I

    Vector based problem

    Okay I am having a total brain freeze on this physics review I am doing. The problem is as follows: A sailboat is sailing due east at 7.8 mph. The wind appears to blow from the southwest at 12.9 mph. [FONT=Book Antiqua](a) What are the true wind speed and direction? Speed in m/s...