• Q : Determine the total change in entropy....
    Physics :

    Assuming no heat is lost to the surroundings and neglibible heat loss from the container. Determine the total change in entropy as a result of the mixing process.

  • Q : Mass of the wrecking ball....
    Physics :

    A large wrecking ball is held in place by two light steel cables. if the tension TA in the horizontal cable is 600 N, what is: a.) the tension TB in the other side that makes an angle of 40o with the

  • Q : Find out the beat frequency heard....
    Physics :

    What is the beat frequency heard when two organ pipes, each open at both ends, are sounded together if one pipe is 58 cm long and the other is 67 cm long? (The speed of sound is 340 m/s)

  • Q : Central diffraction maximum....
    Physics :

    A slit 0.30 mm wide is illuminated by light of wavelength 426 nm. A diffraction pattern is seen on a screen 2.8 m from the slit. what is the linear distance on the screen between the first diffracti

  • Q : Problem based on degrees from the central maximum....
    Physics :

    A single slit illuminated with a 500 nm light gives a diffraction pattern on a far screen. the 5th minimum occures at 7 degrees from the central maximum. At what angle does the 18th minimum occur?

  • Q : What is the wavelength of this new light....
    Physics :

    Monochromatic light of 630 nm wavelength is used. the same slit, illuminated by new monochromatic light source, produces a diffraction pattern with the second minimum at a 60 ° angle from the ce

  • Q : Estimate the local wavelength of this function....
    Physics :

    Eastimate the local wavelength of this function at x=4.0cm by averaging the distance to adjacent crests on either side.

  • Q : By what factor does the tunneling current increase....
    Physics :

    The probe passes over an atom that is .05 nm tall off the surface. By what factor does the tunneling current increase?

  • Q : What is the weight of the heaviest brick....
    Physics :

    A very powerful vacuum cleaner has a hose 2.68 cm in diameter. With the end of the hose placed perpendicularly on the flat face of a brick, what is the weight of the heaviest brick that the cleaner

  • Q : Minimum energy necessary to place satellite in orbit....
    Physics :

    Starting from the satellite on the Earth's surface, what is the minimum energy input necessary to place this satellite in orbit? Ignore air resistance but include the effect of the planet's daily ro

  • Q : How far is the cannon from the observer....
    Physics :

    A cannon fires a cannon ball at 954.4 m/s in a straight line that passes directly over an observer's head. If the observer hears the sound of the cannon fire 2.53 seconds after he sees the cannon ba

  • Q : Carnot engine having reservior temperature....
    Physics :

    A Carnot engine whose cold reservior temperature is 262.09 in Celsius has a thermal efficiency of 15.88%. By how much should the temperature of the hot reservior be increased to raise the efficiency

  • Q : Axis of the soenoid is perpendicular to the page....
    Physics :

    Assume the axis of the soenoid is perpendicular to the page, and the wires and current wind counter clockwise into the page. Assume the current for the straight wire is out of the page?

  • Q : Where should a third positive charge be placed....
    Physics :

    A charge q1 = 5 nC is placed at x = 0 and another charge q2 = -2 nC is placed at x = 2 .0 m. Where should a third positive charge be placed on the x axis so that the net force on it is zero?

  • Q : What is the magnetic field at point on the axis of solenoid....
    Physics :

    In unit vector notation, what is the magnetic field at a point on the axis of the solenoid? Assume the axis of the soenoid is perpendicular to the page, and the wires and current wind counter clockw

  • Q : Work function for metallic sodium....
    Physics :

    The work function for metallic sodium is 2.7eV. (a) At what distance beyond the surface of metallic sodium is the electronâ€TMs probability density 10% of what it is at the surface?

  • Q : What is the larger of the two currents....
    Physics :

    Two long parallel wires carry unequal currents in opposite directions. The ratio of the currents is 3 to 1. The magnitude of the magnetic field at a point in the plane of the wires and 10 cm from ea

  • Q : Evaluate the diameter of the image....
    Physics :

    You produce an image of the Sun on a screen, using a thin lens whose focal length is 23.0 cm. What is the diameter of the image? (The mean radius of the Sun is 6.96 x 108 m and its mean distance fro

  • Q : Internal energy of the gas after adiabatic compression....
    Physics :

    The internal energy of a gas is 1000 J. The gas is compressed adiabatically, and its volume decreases by 500 cm3. If the pressure applied on the gas during compression is 6 atm, what is the internal

  • Q : Calculate a characteristic reynolds number....
    Physics :

    Calculate a characteristic Reynold's number for an aircraft cruising at 1000km/hr. Make any assumptions necessary and justify them.

  • Q : True-breeding stocks of garden peas....
    Physics :

    Suppose you perform a cross between two true-breeding stocks of garden peas, with respect to two characteristics of their flowers.

  • Q : Up-and-down simple harmonic motion....
    Physics :

    A mass of 0.40 kg, hanging from a spring with a spring constant of 80.0 N/m, is set into an up-and-down simple harmonic motion. If the mass is displaced from equilibrium by 0.10 m and released from

  • Q : How far away from the first fret should the next fret be....
    Physics :

    When the thinnest string is pressed down at this first fret, the string produces the highest frequency that can be played on that guitar, 2 317 Hz. The next lower note that is produced on the string

  • Q : Net force on the loop....
    Physics :

    compute the EMF around the loop, the induced current in the loop, the net force on the loop, and its acceleration as it enters the field.

  • Q : What is the direction of current through the smaller loop....
    Physics :

    What is the direction of current through the smaller loop compared to the direction of current in the larger loop? Is it in the same or the opposite direction?

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