Charge of mc is held fixed at the origin. (a) if a mc charge with a mass of 3.20 g is released from rest at the position 10.925 m, 1.17 m2, what is its speed when it is halfway to the origin? (b) suppose the c charge is released from rest at the point x = 1 210.925 m2 and y = 1 211.17 m2. when it is halfway to the origin, is its speed greater than, less than, or equal to the speed found in part (a)? explain. (c) find the speed of the charge for the situation described in part (b).

electric

explanation:

a.   mass number from atomic number

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.