An object of mass 555 grams sitting on a plane inclined at, Ask an Expert

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Q1. If work function 1.85 eV, wavelength 410 nm, what is stopping potential and maximum speed of photoelectrons emitted at metal surface?

Q2. An object of mass 555 grams sitting on a plane inclined at 35 degrees doesn't slide. Now the plane is lifted to the angle of 50 degrees and the object slides down plane knowing that the coefficient of kinetic friction is 0.44, find out the coefficient of static friction.

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