calculate

  1. J

    Python script to find drag force on a 2D object given differential pressure vectors

    I am in need of a python program to calculate the drag force on a 2D object, given differential pressure acting on the object-- this will have to be calculated either manually or (hopefully) by the code. I have the exact location of each pressure vector via a .dat file, and would like to know...
  2. J

    What is the correct formula to calculate the angle of vector A = 0i + 1j

    I know the angle is 90 degrees. and the formula to calculate the angle of vector A is inverse tan of (Ay / Ax), but Excel returns an error message because Ax is zero. Thanks.
  3. S

    Calculate the difference between the initial and final masses of the reaction

    Polonium-212 decays into lead-208 emitting an alpha particle. The mass of polonium is 3.51986x10^-25kg the mass of lead is 3.45323x10^-25kg and the mass of an alpha particle is 6.646x10^-27kg
  4. S

    Calculate the mass deficit in this nuclear reaction

    Calculate the mass deficit in this nuclear reaction $12{\rm C}+\frac{12}{6}{\rm C}\rightarrow \frac{24}{12}{\rm Mg}$ Information given: - rest mass of a carbon-12 nucleus: $1.9921157\times 10^{-26}\,{\rm kg}$ - rest mass of a magnesium nucleus: $3.9817469\times 10^{-26}\,{\rm kg}$ -...
  5. A

    How to calculate thevenin's voltage?

    How do i calculate the potential difference between Va and Vb?
  6. A

    How to calculate in watt

    My two wheeler battery has a input current as indicated in the label is 1.0V. It's capacity as indicated in label is 4 x 12V24Ah. I charged it for 5 hours. How much would be the consumption in watts? How to calculate this?
  7. E

    Calculate the time it takes for river gravel to take on the same temperature as the a

    Heres the scenario: Water level drops in a river. The previously saturated gravel slowly takes on the same temperature as the air. Assuming the gravel was originally the same temperature as the water, and the surface is flat, How long does it take? I believe these are the relevant formulas...
  8. S

    Calculate outlet temperature of adiabatic turbine

    Assume the gas is ideal and monatomic. The inlet gas is at 0.100 MPa and 25 degrees C. The outlet gas is at 2.0 MPa. The work rate is 10 kJ / mole of gas. I know that the work = delta h, so it's outlet enthalpy minus inlet enthalpy. I've tried using this formula for a reversible adiabatic...
  9. A

    How To Calculate Forces Around This HInge?

    I am not a young student. I'm an old man with rotten physics and maths. My plan is to build a sheet metal folder. This kind of thing: https://www.kincrome.com.au/metal-bender-730mm Just like a hinge you lay the sheet metal on, across the hinge bit, and then close the hinge up which...
  10. R

    Calculate Range and Angle

    Hi, Iam working for project.. I have a below requirement My project objective is to find the angle and range for the particular Target I have 4 units, Camera, Target, Displayunit,Tanker camera will find the target in distance of 40km, that information(angle & range) will sent to display...
  11. K

    Calculate the total resistance of the currents in the conductors U = 120 V

    Calculate the total resistance of the currents in the conductors U = 120 V
  12. L

    Calculate a derivation of a the angular speed of a solid body

    I am practicing for a mechanics exam. Please find the problem and solution in the image: I am not able to reach the solution. The question is to derivate an expression of the angular speed to obtain the angular acceleration. The angular speed is a function of the rotation angle, so...
  13. K

    Calculate sound generated from orifice flow

    Hi, I need help to calculate the sound which is generated as the fluid is flowing through the pipe connecting the two reservoir. (the flow direction is 1-2-3) I know every parameters in the system. What will I get if I multiply Q*deltaP? By dimensional analyses, this will give me J/s...
  14. J

    Calculate earths mass and moment of inertia

    Hi again everyone, I have a problem (in two parts) where I believe I am tackling the solution with the correct methodology but somewhere along the line I must be going wrong because cannot match my answers to the ones in the book, in fact I am way out (by a factor of 10 to the power 11 or 12...
  15. M

    calculate the temperature due to Power loss over a res.

    Hi All, Having the following problem I am trying to solve I am an electronics guy some of e physics eludes me in my calc. Here goes.... I am supplying 125Vac into a R which is a 20kohm resistor where I have a 12V zener in series to GND. P_loss = (125Vac - 5V)^2 / R P_loss = 0.72W So lets...
  16. K

    How to calculate the current across two points

    How to calculate the current across two points in this : So what i did is i used Ohms law to find the total current across the whole circuit which i computed to be 3 A and i am given the EMF of the battery and asked to neglect the internal resistance. So i am stuck at calculating the...
  17. K

    How to calculate the current across two points ? PLEASE HELP

    How to calculate the current across two points in this : So what i did is i used Ohms law to find the total current across the whole circuit which i computed to be 3 A and i am given the EMF of the battery and asked to neglect the internal resistance. So i am stuck at calculating the...
  18. U

    How to calculate the conditions for water suction using pressure difference.

    I want to make a container with a low pressure inside it to pull water from a reservoir upward using a pipe, How do I decide on the height, the required pressure difference and the relevant flow rate?
  19. H

    Calculate location of force

    For the question in the image attached, would the force due to the sea water (Fsw)occur at the same point as the force due to the fresh water(Ffw)? My guess is that it does not and that Ffw would occur slightly above Fsw, but I have no idea how to calculate either. With regards to force, the...
  20. K

    Calculate motor torque requide to drive a cart

    Hello, I'm in a design project of a cart. i want to decide a geared motor power and RPM. but I'm in a trouble with this because I'm unable to calculate the motor with radial friction.the cart is with steel wheel and drive on steel rails. place help. Total weight cart+carrying material - 4.5 Ton...