An ac series circuit has an impedance of 192 ω, and the phase angle between the current and the voltage of the generator is ϕ = −75°. the circuit contains a resistor and either a capacitor or an inductor. find the resistance r and the capacitive reactance xc or the inductive reactance xl, whichever is appropriate.

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

Starting with only the balmer series light (visible light), how could we ensure that the solar panels generate a current that mark can use for his power station? a)by gradually increasing the brightness (amount) of light that we shine on it. b)by gradually increasing the frequency of the light we shine on it. c)by gradually increasing the wavelength of the light that we shine on it.

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?