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Two steel wires of the same length, one with radius r and the other with radius 2r, are connected together, end to end, and tied to a wall. An applied force stretches the combination by d = 1.6 mm. How far does the point where the two wires meet move?
A 500-Hz sound travels through pure oxygen. Y=The wavelengthof the sound is measured to be 0.65 m. What is the speed of sound in oxygen
Air in a balloon does 50 J of work while absorbing 70 J of heat. What is its change in internal energy
A person has a far point of 33 cm. What power glasses would correct this vision if the glasses were placed 2.1 cm from the eye
the earth has a mass of 5.98 1024 kg. the average mass of the atoms that make up the earth is about 40 u. based on this
A 1.98 nF capacitor with an initial charge of 4.55 µC is discharged through a 1.23 k? resistor. What is the maximum current in the resistor
The masses of the particles are m1 = m3 = 5.0 kg and m2 = m4 = 8.0 kg. Find out the moment of inertia of the system about the z axis.
A turntable 1.50{m} in diameter rotates at 80.0{rpm} . Two speakers, each giving off sound of wavelength 30.7{cm}, What is the greatest beat frequency the listener will receive from this system
A parallel-plate capacitor in air has a plate separation of 1.49 cm and a plate area of 25.0 cm2. Determine the change in energy of the capacitor
When the projectile is at the top of its trajectory, an internal explosion causes it to separate into two fragments of equal mass. One of the fragments falls straight downward as though it had been free from rest.
A laser light has a wavelength of 670 nanometers and the separation between the two first order diffraction minima is 11 cm. Calculate the slit width and slit separation
Find the speed of the car when brakes were applied.
What speed must she have at point 3, so that the normal force at the top has the same magnitude as it did at the bottom.
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