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An AC source has an output rms voltage of 78.0 V at a frequency of 80.0 Hz. If the source is connected across a 25.0mH inductor, what are (a) the inductive reactance of the circuit, (b) the rms current in the circuit, and (c) the maximum current in the circuit?
What net torque is required to make a solid 50 kg disk (I = ½ mr2) with a radius of 0.7 m experience an angular acceleration of 30 rad/s/s?
Choose for an Amperian loop, a circle of radius r
A single 215Rn nucleus, initially at rest, emits an alpha particle as it decays into a 211Po nucleus, What is the total amount of nuclear potential energy, in joules, that was released in this process
A copper wire of radius a = 0.331 mm has an aluminumjacket of outer radius b = 0.459 mm. There is a currenti = 2.23 A in the composite wire. Take the resistivity for copper and aluminum to be 1.69 x 10-8Ω·m and2.75 x 10-8Ω·m.
Analyze the data. (You will not submit this spreadsheet. However, the results will be needed later in this problem.) Enter the above data into an Excel spreadsheet.
A cook puts 5.40 g of water in a 2.00-L pressure cooker that is then warmed to 460°C. What is the pressure inside the container? (Assume room temperature is 20°C.)
An elevator ascends 200m with maximnum speed of 5.0 m/s. how far deos the elevation move while accelerating to full speed from rest
What is the tension in the erector muscle? Hint: Align your x-axis with the axis of the spine. Express your answer to two significant figures and include the apporpriate units.
An electric point charge of Q1 = 7.85 nC is placed at the origin of the real axis. Another point charge of Q2 = 3.83 nC is placed at a position of p = 3.99 m on the real axis. At which position can a third point charge of q = -7.31 nC be placed so th..
A closed rigid tank whose volume is 1.5 m3 contains Refrigerant 134a, initially a two phase liquid vapor mixture at 10 °C. The refrigerant is heated to a final state where temperature is 50°C and quality is 100%. Locate the initial and final state..
a copper bar 2.5 m long has a circular cross section of radius 2 cm. one end is kept at 80 oc and the other end is kept
A pendulum clock is accurate on earth, where the period of its pendulum is 1.00 s. During a 2 h interval, what would be the elapsed time shown on the clock
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