Recent content by mlee

  1. M

    Solve Physics Problem: Wave Function

    hey who can help me with this physics problem? A particle of mass m is in the state: Ψ (x, t) = Aexp[-a(sqrt (mx^2) / h)-i (at / sqrt(m )) ] where A and a are positive real constants. a) Determine A. b) What is the frequency ƒ associated with the wave function of this particle? Explain...
  2. M

    Solving the Wave Problem: Transmitted Wave Amplitude

    who cam help me with this wave problem?? A wire consists of two sections. For x > 0 the mass density of the wire is greater than for x < 0. The tension in the wire is the same everywhere. When waves propagating along this wire in the positive x direction reach x = 0, part of the wave is...
  3. M

    What Is the Maximum Amplitude of a Wave Pulse?

    Hey dearest people Who can help me solve the following problem? A wave pulse is described by, y = 0.04exp(-0.6(68x - 7600t)2) [m]. Here t is measured in seconds, x and y are measured in meters. a) What is the velocity of this wave pulse? Be careful to get the sign of the velocity...
  4. M

    What Is the Maximum Work a Carnot Engine Can Perform?

    Pls who can help me with this following problem? A real heat engine operates between temperatures Tc and Th. During a certain time, an amount Qc of heat is released to the cold reservoir. During that time, what is the maximum amount of work that the engine might have performed? Thank you
  5. M

    How Does an Ideal Monatomic Gas Cycle Operate?

    Hi people, Who can help me solve this problem? One mole of an ideal monatomic gas at STP first undergoes an isothermal expansion so that the volume at point b is 2.5times the volume of point a. Next, the heat is extracted at a constant volume so that the pressure drops. The gas is then...
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    Calculate Body Heat Loss & Time to Compensate with Help from Physics Experts

    a) Q= kA(T_H-T_L)/h, where k=0.040W/(mK),A= 1.8m^2, h=1.2x10^-2m, T_H= 33, T_L=1 Q= 1830 Watts b) Q= 22875 Watts IS this right>??
  7. M

    Calculate Body Heat Loss & Time to Compensate with Help from Physics Experts

    Dear people, Who can help me with this physics problem? A skier is sitting on top of the mountain on a windless day. The sky is cloudy and the principal loss of her body heat is due to conduction. Her body temperature is 33 degrees of celsius and the air temperature at the surface of her...
  8. M

    Calculate Damping Coefficient of 50.0g Egg

    cos phi is 0.333? is that right?
  9. M

    Calculate Damping Coefficient of 50.0g Egg

    and w' = 5*10^2-(b^2/1*10^-2) is that right?
  10. M

    Calculate Damping Coefficient of 50.0g Egg

    i don't know how to find phi
  11. M

    Calculate Damping Coefficient of 50.0g Egg

    ω = sqrt(k/m) ω' = √((k/m) - (b²/4m²))
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