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You have a string with a mass of 12.3 g. You stretch the string with a force of 9.87 N, giving it a length of 1.93m. Then you vibrate the string transversely at precisely the frequency that corresponds to its fourth normal mode, that is, at its fourth harmonic. What is the wavelength of the standing wave you creat in the string? what is the frequency?
The electric field of a charge is 1.69e+07 N/C at a distance 14.1 cm and points away from the charge. What is the sign and magnitude of the charge
A uniform disk of mass M = 1.6 kg and radius R = 0.18 m rotates counterclockwise at a constant rate of 36 rev/s about its central axis. Determine the radial acceleration of a point on its rim
An electron with kinestic energy 1.8 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 27.0 cm, Find the period of the motion
The charges and coordinates of two charged particles held fixed in the xy plane are: q1=2.90 ?C, x1=3.900 cm, y1=8.700 cm, What are the x and y coordinates of a third charge q3=3.00 ?C
A parallel-plate capacitor is constructed using a dielectric material whose dielectric constant is 2.90, Find the minimum area of the capacitor plates
An electron is moving at a speed of 8.0 103 m/s in a circular path of radius of 2.0 cm inside a solenoid. Find the strength of the magnetic field inside the solenoid
The magnetic flux that passes through one turn of a 10-turn coil of wire changes to 5.0 Wb from 6.0 Wb in a time of 0.086 s. The average induced current in the coil is 185A. What is the resistance of the wire
A lens placed at the origin with its axis pointing all along the x axis produces a real inverted image at x=-24cm that is twice as tall as the object. What is an image distance.
Hydrogenic atoms in an ultraviolet light fall from energy quantum state n = 9 to state n = 2 while releasing ultraviolet photons. How many photons are being released per second
Refrigerant-134a enters a compressor at 180 kPa as a saturated vapour with a flow rate of 0.35 m3/min and leaves at 700 kPa. The power supplied to the refrigerant during compression process is 2.35 kW. What is the temperature R-134a at the exit of th..
Light of a wavelength of 661.1 nm is received from a star that is emitting light of wavelength of 659.6 nm. How fast is the star moving relative to the earth
A block just begins to slide down a ramp after being elevated to an angle of 40 degrees. What is the coefficient of static friction
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