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...
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...
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...