Aobject of mass 33 is dropped from a height of 85 meters. calculate the average power developed by the object in falling through this distance.
take g as 9.81 m/s^2
give the answer in watts to three significant figures

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?