95 Figure 33-74 shows a cylindrical resistor of length l, radius a, and resis- tivity p, carrying current i. (a) Show that the Poynting vector S at the sur- face of the resistor is everywhere directed normal to the surface, as 3. shown. (b) Show that the rate P at which energy flows into the resistor through its cylindrical surface, calcu- lated by integrating the Poynting vector over this surface, is equal to the rate at which thermal energy is 3- produced: in where dA is an element of area on the cylindrical surface and R is the resistance. -2a-

Q: A uniform electric field perpendicular to a spherical surface of radius 5.00 cm is increasing at a…

A: From the question, it is given that- Radius of spherical surface: r = 5.00 cm = 5.00 x 10-2 m Rate…

Q: Find the average radiation pressure (in pascals and in atmospheres) on a totally absorbing section…

A:

Q: A 0.142-A current is charging a capacitor that has square plates 5.60 cm on each side. The plate…

A: Given: Current,I=0.142ALength,L=5.60cm=5.60×10-2mSeperated Distance,d=4mm=4×10-3mPermitivty of free…

Q: EXAMPLE 31-4. Cell phone antenna. The antenna of a cell phone is often 1/4 wavelength long. A…

A: f=882MHz Thank you  Let me know if you have any doubts Explanation:Step 1: Given that  The length of…

Q: In the 25 ft Space Simulator facility at NASA's Jet Propulsion Laboratory, a bank of overhead arc…

A: A) Write the expression for the average radiation pressure on a totally absorbing section and…

Q: EXAMPLE 31-6. E and B from the Sun. Radiation from the Sun reaches the Earth (above the atmosphere)…

A:

Q: A solenoid of radius r = 1.25 cm in diameter and 30.0 cm long has 300 turns and carries 12.0 A shown…

A:

Q: Tmagnetic field strength in

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Q: The magnetic field component of an EM wave propagating through a nonmagnetic medium (µ = µ0) is H H=…

A: The magnetic field component of an EM wave is : H=25 sin2×108t+6xay mA/m   We know, The displacement…

Q: A 0.142-A current is charging a capacitor that has square plates 4.40 cm on each side. The plate…

A: Given:I=.142 AEach side of the plate = 4.40 cmplate separation=4.00 mm

Q: a) Consider a laser beam propagating through free space. The beam has an average power of 5 mW (a…

A: As per the guideline we will answer first question.

Q: EXAMPLE 31-8 ESTIMATE A solar sail. Proposals have been made to use the radiation pressure from the…

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Q: At one location on the Earth, the rms value of the magnetic field caused by solar radiation is 1.90…

A:

Q: A 0.140-A current is charging a capacitor that has square plates 5.20 cm on each side. The plate…

A:

Q: H.W.: The maximum magnetic field at a distance of 10 m from an isotropic point light source is 9 ×…

A: The expression for the maximum value of the electric field, E=cB   Substitute, E=3×108 m/s9×10-9…

Q: The figure shows a circular region of radius R = 3.00 cm in which an electric flux is directed out…

A:

Q: What is the average magnitude of the Poynting vector 9.00 mi from a radio transmitter broadcasting…

A: Power, P=300 kW=300×103WDistance, r=9.00 mi=9×1609 m=14481m=14.48×103m