SSM An ac generator has emf ℰ = ℰ m sin( ω d t = π /4), where ℰ m = 30.0 V and ω d = 350 rad/s. The current produced in a connected circuit is i(t) = I sin ( ω d t = 3 π/ 4 ), where I = 620 mA. At what time after t = 0 does (a) the generator emf first reach a maximum and (b) the current first reach a maximum? (c) The circuit contains a single element other than the generator. Is it a capacitor, an inductor, or a resistor? Justify your answer. (d) What is the value of the capacitance, inductance, or resistance, as the case may be?
SSM An ac generator has emf ℰ = ℰ m sin( ω d t = π /4), where ℰ m = 30.0 V and ω d = 350 rad/s. The current produced in a connected circuit is i(t) = I sin ( ω d t = 3 π/ 4 ), where I = 620 mA. At what time after t = 0 does (a) the generator emf first reach a maximum and (b) the current first reach a maximum? (c) The circuit contains a single element other than the generator. Is it a capacitor, an inductor, or a resistor? Justify your answer. (d) What is the value of the capacitance, inductance, or resistance, as the case may be?
SSM An ac generator has emf ℰ = ℰm sin(ωdt = π/4), where ℰm = 30.0 V and ωd= 350 rad/s. The current produced in a connected circuit is i(t) = I sin (ωdt = 3
π/
4), where I = 620 mA. At what time after t = 0 does (a) the generator emf first reach a maximum and (b) the current first reach a maximum? (c) The circuit contains a single element other than the generator. Is it a capacitor, an inductor, or a resistor? Justify your answer. (d) What is the value of the capacitance, inductance, or resistance, as the case may be?
At point A, 3.20 m from a small source of sound that is emitting uniformly in all directions, the intensity level is 58.0 dB. What is the intensity of the sound at A? How far from the source must you go so that the intensity is one-fourth of what it was at A? How far must you go so that the sound level is one-fourth of what it was at A?
Make a plot of the acceleration of a ball that is thrown upward at 20 m/s subject to gravitation alone (no drag). Assume upward is the +y direction (and downward negative y).
Chapter 31 Solutions
Fundamentals of Physics Extended 10E WileyPlus 5 Student Package
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