An ac generator with an output rms voltage of 18.0 v at a frequency of 60.0 hz is connected across a 85.0-μf capacitor. find the following. (a) capacitive reactance (b) rms current (c) maximum current in the circuit (d) does the capacitor have its maximum charge when the current takes its maximum value? o yes o no

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above