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A steel guitar string has a length of 74 cm and thickness of 0.37 mm. It is under 35N tension. Calculate the wave speed in the string. The density of steel rho=7.84 x 10^3 kg/m^3.
A large air-filled 0.247-kg plastic ball is thrown up into the air with an initial speed of 11.3 m/s. What fraction of its original energy has been lost to air friction
A physicist has developed a device that generates a beam of alpha particles (each of which is a helium nucleus, consisting of two protons, two neutrons, and no electrons).
Three equal positive point charges of magnitude Q = 3.00 µC are located at three corners of a square of edge length d = 7.9 cm. At the position of the negative charge, what is the magnitude of the electric field due to the three positive charges
Traveling at a speed of 14.1 m/s, the driver of an car suddenly locks the wheels by slamming on the brakes. Find the speed of the automobile after 1.16 second has elapsed
A body is in motion at 1.0 m/s less than the speed of light. What is the Lorentz factor of this body
Two particles execute simple harmonic motion of the sameamplitude and frequency along the same straight line. What is the phase difference between them
A 35-kg box is pulled with a 55-N force at 38 degrees above the horizonal surface. what is the net work done on the box
A hammer taps on the end of a 4.00-m-long metal bar at room temperature. What is the speed of sound in this metal
A 56.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 1.22×10-7 ?m, What will be the diameter of the wire
0.20 moles of Helium gas that initially occupies a volume of 4.0L under a total pressure of 1.0x10^5 Pa, subsequently undergoes an isobaric expansion to 5.0L followed by an isothermal expansion to 8.0L.
A copper rod 81cm long is used to poke a fire. The hot end of the rod is maintained at 105 degrees celcius and the cool end has a constant temperature of 21 degrees celcius. What is the temperature of the rod 25cm from the cool end?
A small coin, initially at rest, begins falling. If the clock starts when the coin begins to fall, what is the magnitude of the coin\'s displacement
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