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A standing wave on atight string experiment is set up in the laboratory. One endof the string is attached to an oscillator that vibrates with a frequency of 60 Hz. The other end of the string passes over apulley and is attached to a mass. The distance between theoscillator and the pulley is 1.2 m. When the oscillator isturned on, six loops are observed on the string. The linearmass density of the string is 1.4 g/m.
What is the wavelength ofthe standing wave?
What is the wave speed ofthe standing wave?
How much mass is hanging on the string?
Work function of potassium is 2.25 eV. Find the cutoff wave length of potassium
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