Spring scale, calibrated in newtons , is used to weigh sugar . if it were possible to wigh sugar . if it possible to weigh sugar at the following locations , where will the buyer get the most sugar to a newton ? A_At north pole
B_ At the equator
C_At the center of earth
D_On the moon
E_ On jupiter
With explain your answer

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration