A new cordless phone emits 3.6 mW at 5.8 GHz. The manufacturer claims that the phone has a range of 100 feet. Part A If we assume that the wave spreads out evenly with no obstructions, what is the electric field strength at the base unit 100 feet from the phone? Express your answer to two significant figures and include the appropriate units. En = Value Units Submit Request Answer Provide Feedback

T Part A What is the line integral of B between points i and f in (Figure 1)? Assume that I = 1.0 A. Express your answer in tesla-meters. View Available Hint(s) & ja 7 B. ds = Provide Feedback Submit F7 15] ΑΣΦ 8 DII F8 9 F9 0 ? A F10 T.m F11 F12 Review Next > de

Part A Light from the sun allows a solar cell to move electrons from the positive to the negative terminal, doing 1.2 × 10-19 J of work per electron. What is the emf of this solar cell? Express your answer to two significant figures and include the appropriate units. HA ? E = Value Units Submit Request Answer Provide Feedback

A capacitor has a peak current of 330 μA when the peak voltage at 330 kHz is 2.8 V. Part A What is the capacitance? Express your answer to two significant figures and include the appropriate units. C = Submit Part B Ic= μA Value Submit Request Answer If the peak voltage is held constant, what is the peak current at 660 kHz ? Express your answer to two significant figures and include the appropriate units. μA Value Units Request Answer biệt Units wwwww

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P Performance Matters Welcome, Bertiana! ► || A Tools - Question 2 of 51 Submit Test 04.CFE.2003380.2003390.2003836.2003840.Phy... A cell phone will typically have a power output of 1.4 watts when playing a song that lasts for 300 seconds. If the electrical resistance of the cellphone is 400 Q, what is the total charge needed to play the song?

A transformer with a turns ratio (secondary/primary) of 1:13 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit. Part A What is the voltage supplied to the recharger? Express your answer using two significant figures. -ΨΓ ΑΣΦ V = Submit Request Answer ? V

Part A A hollow metal cylinder has inner radius a, outer radius b, length L, and conductivity o. The current I is radially outward from the inner surface to the outer surface. Find an expression for the electric field strength inside the metal as a function of the radius r from the cylinder's axis. Express your answer in terms of some or all of the variables a, b, L. o. I, r, and the constant T. E(r) = Submit Request Answer Part B Evaluate the electric field strength at the inner surface of an iron cylinder if a = 0.60 cm , b= 2.2 cm , L = 10 cm, and I = 27 A Express your answer to two significant figures and include the appropriate units. HÀ Einner = Value Units Submit Request Answer Part C Evaluate the electric field strength at the outer surface of an iron cylinder if a = 0.60 cm. b= 2.2 cm. L=10 cm, and I= 27 A Express your answer to two significant figures and include the appropriate units. ? Eouter = Value Units Submit Request Answer

Part A A 1.3x10-3 V/m electric field creates a 4.9x1017 electrons/s current in a 1.5-mm-diameter aluminum wire. What is the drift speed? Express your answer using two significant figures. va = 1.12 • 10-6 m/s Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B What is the mean time between collisions for electrons in this wire? Express your answer using two significant figures. nνα ΑΣφ ? T = S Submit Request Answer Drovide Cood bools