Hw #5_10-31 copy

Please answer quickly The angular frequency of waveform having a period of 1 msec is 2pi radians/sec.       True       False   Root mode square value of a signal is same as the effective value of a signal.  True  False   The magnetic field energy stored in between the plates of the capacitor is mathematically equal to the half of the product of its capacitance and the square of the voltage across the capacitor.  True  False

One graph shows a particle's movement on a string as a function of time. Its amplitude is 2m, the period is 0.5s, and frequency, 2Hz. The second graph shows the same wave but as a function of distance. What would be its amplitude, wavelength, and wave speed? (my answers were amplitude: 2, the wavelength of 0.4, and wave speed of 1. but one of them seem to be incorrect).

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A water droplet of mass 3.00 x 10-12 kg is located in the air near the ground during a stormy day. An atmospheric electric field of magnitude 6.00 x 103 N/C points vertically downward in the vicinity of the water droplet. The droplet remains suspended at rest in the air. What is the electric charge on the droplet?

Solve it correctly please. I ll rate