What is the rms current in a series RC RC circuit if R RR = 4.9 kΩ kΩ , C CC = 0.80 μF μF , and the rms applied voltage is 130 V V at 51 Hz Hz ? Express your answer using two significant figures.

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.