Very small particles moving in viscous fluids experience a drag force proportional to

speed. Consider a particle of net weight W dropped in a fluid. The particle experiences a

drag force, FD = kV, where V is the particle speed. Determine the time required for the

particle to accelerate from rest to 95 percent of its terminal velocity Vt in terms of k, W,

and g. Express the distance required to reach 95% of its terminal speed in terms of g, K,

and W.

Why is alternating current more effective at long–distance travel than direct current? a. the power lines are made out of conductors. b. transformers increase or decrease voltage as needed. c. the ac generator is more efficient. d. ac has lower voltage than dc.

During spring semester at mit, residents of the parallel buildings of the east campus dorms battle one another with large catapults that are made with surgical hose mounted on a window frame. a balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. assume that the stretching of the hose obeys hooke's law with a spring constant of 89.0 n/m. if the hose is stretched by 5.80 m and then released, how much work does the force from the hose do on the balloon in the pouch by the time the hose reaches its relaxed length? unitst 3 number-1497 the tolerance is +/-5% open show work click if you would like to show work for this question:

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?