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Problem from Work

Suresh pushes a create with a mass of 50KG down a slope with a rough surface, using a pushing force of 45N parallel to the slope downward. The slope is 2m in length. The inclination of the slope is 40 degrees. The crate starts at rest at the top of the plane. the frictional force between the plane and the crate is 140N. calculate the net force exerted on the crate.

Asked Sadashni

Dielectric slab problem

when a dielectric slab of thickness 6 cm is introduced between the plates of parallel plate condenser, it is found that the distance between the plates has to be increased by 4 cm to restore to capacity to original value . the dielectric constant of the slab is ?

What is the maximum number of possible interference maxima for slit-separation equal to twice the wavelength in Young’s double split experiment? why?

What is the maximum number of possible interference maxima for slit-separation equal to twice the wavelength in Young’s double split experiment? why?

Asked a student

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