Recent content by strayaway

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    How to find the wavelength of a sound wave?

    Homework Statement What is the wavelength of a 25 Hz sound wave? What is the wavelength of a 4.5 kHz sound wave? Homework Equations wavelength = velocity / frequency or λ = v/f The Attempt at a Solution I know that I'm supposed to plug the 25 into the equation, but he didn't give...
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    Specific Heat (kCal and J) for copper, help please

    Homework Statement How much heat is required to raise the temperature of a 50 gram cube of copper from 20 degrees Celsius to 45 degrees Celsius? (in kcal and J) Specific Heat(20degrees Celsius) for Copper (kcal/kg x degrees Celsius) is 0.092. and the Specific Heat for Copper (J/kg x degrees...
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    Acceleration of a plane and the g-force

    Acceleration of a plane and the "g-force" Homework Statement Steam catapults are used to launch aircraft. During the launch of a F/A-18 jet (mass: 16,770 kg) the catapult accelerates from 0 to 250 km/hr within 76m of deck length. Calculate the force produced by the catapult, the acceleration...