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<HTML><HEAD><TITLE>Math / Physics Problem Solver</TITLE></HEAD><BODY>
<H2>Math / Physics Problem Solver</H2>

This program solves simple math and physics problems stated in English.
<P>
<FORM METHOD=GET ACTION="nph-physd-action.cgi">
<OL>
<LI>    Enter the question here: <BR>
        <textarea rows="5" cols="80" VALUE="" NAME="xdspsource"></textarea>
<LI>    Click <INPUT TYPE=submit VALUE="here"> to submit the request.
</OL>
<P>
<a href="physlaws.lsp">Physical principles, variables, equations</a>
<P>
Example problems include:
<UL>
<LI> <TT>What is the area of a circle with circumference = 10 meters?</TT>
<LI> <TT>What is the volume of a cone with radius 2 m and height 3 m</TT>
<LI> <TT>What is the time of a fall with height = 125 m?</TT>
<li> <tt>How does the pressure of an ideal gas vary if temperature is doubled
     and volume is 8 times its previous value</tt>
<LI> <TT>How does the force of gravitation change as radius is doubled?</TT>
<li> <tt>How does the force of gravitation vary with radius</tt>
<li> <tt>What is the gravity of a fall with time 1 sec and height 3 m</tt>
<LI> <TT>What is the area of a circle with radius "r"</tt>
<LI> <TT>What is the radius of a cone with volume "v" and height 7</tt>
<LI> <TT>What is the charge of a capacitor with capacitance = 5 uf and voltage
      = 100 volts</TT>
<LI> <TT>What is the wavelength of light with energy = 1 ev</tt>
<li> <tt>What is the power of a lift with mass = "m" and height = "h"
      and time = "t" and gravity = "g"</tt>
<li> <tt>What is the work of a lift with weight 20 nt and height 3 m</tt>
<li> <tt>What is the power of a lift with weight 700 nt and height 8 m and time
      10 sec</tt>
<li> <tt>What is the angular momentum of a circular motion with radius 4 m and
      mass 2 kg and velocity 3 m/s</tt>
<li> <tt>How does the electric field of a capacitor vary if the voltage is
     doubled and the distance is 0.2 times its previous value</tt>
<li> <tt>What is the cost of a resistor with voltage 120 volts and current 4
      amps and time 2 hours and unit cost 10 cents per kwh</tt>
<li> <tt>What is the image distance of a concave mirror with radius = 1.0 m and
      subject distance = infinity m</tt>
<li> <tt>What is the magnification of a converging lens with subject distance =
      6 cm and focal length = 9 cm</tt>
<li> <tt>What is the velocity of a charged particle moving in a magnetic field
      with a field of 0.1 tesla and a radius of
      0.1 m and a charge of 1.6e-19 coulomb and a mass of 1.67275e-27 kg</tt>
<li> <tt>How does the radius of a charged particle moving in a magnetic field
     vary if mass is quadrupled and charge is doubled</tt>
<li> <tt>How does the de broglie wavelength of an elementary particle vary with
     mass if kinetic energy is constant</tt>

<li> <tt>How does the frequency of light vary if energy is halved</tt>
<li> <tt>What is the capacitance of series capacitors with c1 = 6 uf
            and c2 = 3 uf</tt>
<li> <tt>What is the terminal voltage of a battery with a current of
        0.3 amp and internal resistance of 4 ohms and voltage of 12 volts</tt>
<li> <tt>what is the speed of a wave with frequency 5 hz and wavelength
         2 m</tt>
<li> <tt>What is the wavelength of light with energy = 6 ev</tt>
<li> <tt>How does the emf of a wire moving in a magnetic field vary
            as velocity is doubled</tt>
<li> <tt>What is the efficiency of a heat engine with heat = 100 joules
            and heat exhausted = 60 joules</tt>
<li> <tt>How does the potential of a charged sphere vary if radius is
            doubled</tt>
<li> <tt>What is the final velocity of a collide-and-stick with
            m1 = "ma" and m2 = "MB" and v1 = "v" and v2 = 0</tt>
<li> <tt>What is the angular momentum of a circular motion with radius 4 m
            and mass 2 kg and velocity 3 m/s</tt>
<li> <tt>What is the flux of a magnetic field with field = 2 tesla
            and area = 40 square-centimeter</tt>
<li> <tt>How does the wavelength of light vary if index of refraction is
            doubled</tt>
<li> <tt>What is the half-life of a radioactive decay with
            initial rate = 4000 and final rate = 500 and time = 30 min</tt>
<li> <tt>What is the slit separation of a diffraction with radius = 5 m
         and distance from central maximum = 3 m and wavelength = 0.12 m</tt>
<li> <tt>How does the pressure of an ideal gas vary if temperature is
            doubled and volume is constant</tt>
<li> <tt>How does the satellite velocity of a gravitation vary with radius</tt>
<li> <tt>What is the proportion floating of a float with weight 6 nt
            and volume 2e-3 m3</tt>
<li> <tt>What is the maximum efficiency of a heat engine with heat source
            temperature = 400 kelvin and heat reservoir temperature =
            300 kelvin</tt>
<li> <tt>What is the equilibrium temperature of a heat transfer with
            m1 = 50 g and c1 = 900 joules per kg per degK and t1 = 423 kelvin
            and m2 = 200 g and c2 = 4700 joules per kg per degK and t2 = 293
            kelvin</tt>
<li> <tt>What is the doppler frequency of a sound with frequency = 1000 hz
       and source speed = 10 meters per second and observer speed = 0 m/s</tt>
<li> <tt>What is the power of a sound with radius = 20 m and decibel = 40</tt>
<li> <tt>What is the energy of a nuclear reaction with initial mass = 
            9.028 amu and final mass = 9.012 amu</tt>
<li> <tt>What is the height of a projectile with initial velocity = "v"
            and angle = "theta" and gravity = "g"</tt>
<li> <tt>What is the frequency of the homozygous dominant genotype
            in a population with a frequency of the homozygous recessive
            genotype of 0.2</tt>


</UL>
<P>
<HR>

<address><a href="http://www.cs.utexas.edu/users/novak/index.html">
Gordon S. Novak Jr.,</a></address>
<a href="http://www.cs.utexas.edu/">Department of Computer Sciences,</a>
<a href="http://www.utexas.edu/">University of Texas at Austin</a>
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