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What is the wavelength (in m) of a 5 KHZ sound wave in a material where the speed of sound is 1540 m/s?
The disk and hub together have a mass of m=5 kg and mass moment of inertia (about the center) I=2 kgm^2. The disk radius is 3 m and the hub radius is 1 m. The disk rolls without slip. If after 1 revolution, the angular velocity of the disk and hub..
A transformer connected to a 240 volt a.c mains is used to light a 12V/36W lamp.a) what current does the lamp need to light normally?
What constitutes or composes of Kirchhoff's current law?
In the model of hydrogen atom created by Neils Bohr, the electron moves around the lone proton in the nucleus at a speed of 2.2 x 106 m/s in a circle with radius 5.3 x 10-11 meter. Obtain the total energy of the electron
A series RC circuit is driven by an alternating voltage source at a frequency of 103 Hz. By what phase angle does the capacitor voltage lead (positive) or lag (negative) relative to the resistor voltage
An incompressible fluid is flowing through a pipe with a constriction. The pipe is on an incline with an angle of 30.0 degrees. What is the pressure in the narrow section of the pipe
A 2kg ball traveling to the right with a speed of 4 m/s collides with a 4 kg ball traveling to the left with a speed of 2 m/s. The total momentum of the two balls after the collision is what.
The temperature difference between the inside and the outside of a home on a cold winter day is 57.0°F. Express this difference on the Celsius scale
An astronaut is traveling to the Moon at a speed of 0.57c. When his spacecraft is1.9*10 8 m from the Moon, there is an explosion on the Moon. How long does it take for light from the explosion to reach the astronaut as gauged on the astronaut's clo..
Two point charges, +3.18 µC and -6.65 µC, are separated by 1.13 m. What is the electric potential midway between them
A wire loop of radius 0.40 m lies so that an external magnetic field of magnitude 0.40 T is perpendicular to the loop. Find the magnitude of the average induced emf in the loop
assume the mass of the object remains constant. a if the kinetic energy of an object changes by 13 by what factor has
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