Recent content by MissKaylaPaige

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    Wavelength of the 2nd Overtone of a string.

    Yes, I meant the fundamental WAVELENGTH is 9m. The fundamental FREQUENCY is 5.3 Hz. But no, 3 times the fundamental frequency is not giving me the correct answer for the wavelength of the 2nd overtone.
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    Wavelength of the 2nd Overtone of a string.

    Homework Statement Find the wavelength of the 2nd overtone of a string 4.5 m long between points with a transverse speed of 48 m/s. Homework Equations The Attempt at a Solution Since the fundamental frequency is 9, shouldn't the 2nd overtone be 2/3 of that? I'm completely baffled!
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    Calculating Pressure and Velocity in a Venturi Meter Setup

    Homework Statement A pair of vertical, open-ended glass tubes inserted into a horizontal pipe are often used together to measure flow velocity in the pipe, a configuration called a Venturi meter. Consider such an arrangement with a horizontal pipe carrying fluid of density p.The fluid rises to...
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    Calculating the Net Downward Force on a Cylindrical Water Tank on Mars

    I know the force from the outside air is 2.18x10^5 N, and the force of the water inside is 3.93x10^5 N, so if I find the force of the air inside the tank as well, the sum of them will give me what I'm looking for?
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    Calculating the Net Downward Force on a Cylindrical Water Tank on Mars

    Homework Statement I have a cylindrical water tank of mars, where acc. due to gravity= 3.71 The pressure at the surface of the water is 110 kPa, and the depth of the water is 14.5 m The pressure of the air outside the tank is 91 kPa Find the net downward force on the tanks flat...
  6. M

    Finding Angular Acceleration in a Pulley System

    This is what I've gotten... F=ma F=mg-T -T=1/2m r alpha a= -alpha r I then substitute to get F=m(-alpha r)=mg-T -alpha r= g-T/m but if I substitute in for T I will cancel alpha which is what I'm looking for!
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    Finding Angular Acceleration in a Pulley System

    Alright, it told me to substitute for certain values in equations, and then to solve the system of equations by eliminating T, tension. I'm not sure where the energies come into play here... I've literally spent hours the past 3 days on this problem, I'm sick of not understanding this danged...
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    Finding Angular Acceleration in a Pulley System

    AHH, when I entered an answer that implied it was equal to g, it gave me feedback that it had to be a lesser rate. Okay, I've never solved these equations through differentiation but I suppose I can try??
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    Finding Angular Acceleration in a Pulley System

    I'm assuming it descends with accn g, because it doesn't tell me otherwise... and I'm not sure what you mean by total energy?
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    Finding Angular Acceleration in a Pulley System

    Homework Statement A string is wrapped around a uniform solid cylinder of radius R, cylinder can rotate freely about its axis. The loose end of the string is attached to a block. The block and cylinder each have mass, m. Find the magnitude "alpha" of the angular acceleration of the...
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    Calculating Muzzle Velocity of a Spring-Loaded Toy Gun

    Homework Statement A spring-loaded toy gun is used to shoot a ball of mass m=1.5 kg straight up in the air. The spring has spring constant k=6.7N/m. If the spring is compressed a distance of 25.0 centimeters from its equilibrium position y=0 and then released, the ball reaches a maximum...
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    How Is Energy Dissipated by Friction Calculated in Physics Problems?

    Homework Statement Find the amount of energy E dissipated by friction by the time the block stops. Express your answer in terms of some or all the variables m, v, and h and any appropriate constants. Homework Equations sqrt(v^2 + 2gh) The Attempt at a Solution I know it...
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    How Much Would You Weigh on a Neutron Star?

    Homework Statement Neutron stars, such as the one at the center of the Crab Nebula, have about the same mass as our sun but a much smaller diameter. If you weigh 675 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter...
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