Một chất điểm chuyển động tròn đều trên quỹ đạo có bán kính r = 40cm với chu kì T= 2s. Tính tốc độ góc, tốc độ dài và gia tốc hướng tâm của chất điểm.

Two large, flat, horizontally oriented plates are parallel to each other, a distance d apart. half way betwween the two plates the electric field has magnitude e. if the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates?

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

Decreased sensitivity to an unchanging stimulus is known as