Use the momentum vs. time graph below to answer the following questions. let east be the positive direction & west be the negative direction. express all answers in the appropriate mks units. momentum vs. time graph a.) identify when the object was not moving. b.) over what period of time was the object speeding up? to c.) over what period of time was the object slowing down? to d.) over what period of time was the object's speed constant? to e.) state the magnitude & direction of the object's impulse during the following 3 time frames: 0 to 150 s → 150 to 200 s → 200 to 250 s → f.) determine the magnitude & direction of the object's total impulse. g.) state the magnitude & direction of the net force on the object during the following 3 time frames: 0 to 150 s → 150 to 200 s → 200 to 250 s →

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.

energy stored in the capacitor= 9.72 x 10⁻⁴ j

explanation:

the energy stored in the capacitor is given by

e= 1/2 c v²

e= energy stored

c= capacitance= 1.5 µc= 1.5 x 10⁻⁶f

v= potential difference=36 v

so energy stored= e= 1/2 (1.5 x 10⁻⁶) (36)²

energy stored= 9.72 x 10⁻⁴j