Part A A 1.4 m -long FM antenna is oriented parallel to the electric field of an EM wave. How large must the electric field be to produce a 1.00-mV (rms) voltage between the ends of the antenna? Express your answer using two significant figures. Erms = 7.1×10-4 V/m Submit Previous Answers Part B Correct What is the rate of energy transport per square meter? Express your answer using two significant figures. S = ΕΠΙ ΑΣΦ ? W/m²

&key=140171644883017936312024#/ What is VR if the emf frequency in (Figure 1) is 4.0 kHz? Express your answer with the appropriate units. ▸ View Available Hint(s) ΜΑ VR = Value Units Submit Part B ? What is Vc if the emf frequency in (Figure 1) is 4.0 kHz? Express your answer with the appropriate units. ▸ View Available Hint(s) ? Vc = Value Units Submit 1 of 1 Part C ww 200 Ω What is VR if the emf frequency in (Figure 1) is 25 kHz? Express your answer with the appropriate units. ▸ View Available Hint(s) a F5 5 96 ΜΑ বর DII 44 F7 F8 F9 F10 & ( ) 6 7 8 9 0 F11 ☆ Finish update T Y U I 0 P [ C H F12 == delete

. Write Maxwell's equation for harmonically varying field. Which law is related to induced emf in a circuit? Determine the emf developed about the path r=1, z=0 and t=0 if B= 2 sin 377t wb/m2.

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In a particular city, electrical energy costs $0.13 per kilowatt-hour( Round your answers, in dollars. to at least two decimal places.) a. How much does it cost to operate an old-style incandescent 40.0-W light bulb continously for 24 hours? b. A modern LED light bulb that emits as much visible light as a 40.0-W incandescent only draws 4.50 W of power. How much does it cost to operate this bulb for 24 hours? c. A particular electric oven requires a potential difference of 220 V and draws of 22.0 A of current when operating. How much does it cost to operate the oven for 4.30 hours?

A closed curve encircles several conductors. The line integral around this curve Express your answer in amperes. IS $B.dl 3.55x10 4 T.m. A Submit Request Answer Part B If you were to integrate around the curve in the opposite direction, what would be the value of the line integral? Express your answer in tesla-meters. ΑΣΦ 3.55 10 4 T.m Submit Previous Answers Request Answer X Incorrect; Try Again; 9 attempts remaining Check your signs.

1- A dielectric disk of radius a and thickness d is situated in free space. The disk is Find the distribution of bound polarized with a polarization vector P(r) = P₁ Î charges of the disk 2- Consider a two-wire transmission line in air. The radius of the wires is a and the distance between the conductor axis is d (d » a ). The transmission line is connected to a constant voltage source of magnitude Vo. Find the electric energy per unit length of the transmission line a

A 2.50-m-diameter university communications satellite dish receives TV signals that have a maximum electric field strength (for one channel) of 7.50 (V/m. (See Figure 24.28.) (a) What is the intensity of this wave? (b) What is the power received by the antenna? (c) If the orbiting satellite broadcasts uniformly over an area of 1.501013m2 (a large fraction of North America), how much power does it radiate? Figure 24.28 Satellite dishes receive TV signals sent from orbit. Although the signals are quite weak, the receiver can detect them by being tuned to resonate at their frequency.

Professor Edward Ney was the founder of infrared astronomy at the University of Minnesota. In his later years, he wore an artificial pacemaker. Always an experimentalist, Ney often held a strong laboratory magnet near his chest to see what effect it had on his pacemaker. Perhaps he was using the magnet to throw switches that control different modes of operation. An admiring student (without an artificial pacemaker) thought it would be fun to imitate this great man by holding a strong magnet to his own chest. The natural pacemaker of the heart (known as the sinoatrial node) carries a current of about 0.5 mA. Estimate the magnetic force exerted on a natural pacemaker by a strong magnet held to the chest. How do you think the student might have felt during the experiment? Explain your geometric assumptions. Hints: See Table 30.1 (page 941) to estimate the magnetic field, and assume the field is roughly uniform. Use Figure P30.58 to estimate the size of the sinoatrial node; your heart is about the size of your fist. FIGURE P30.58

Help. You decide to use a toaster to toast a slice of bread using the wall outlet of your home. Knowing that the voltage supply of your home is alternating given by the function V = 120 sin (2 πft), where f = 120 Hz and t is time in seconds:  1. If the toaster oven uses nichrome wire that measures a total length of 0. 25 m with a thickness of 0.5 mm (diameter of wire), what is the resistance of the wire when heats up to 100.0 C from room temperature of 20. 0 °C? 2. Knowing the resistance value of the wire from part a) and using Ohms Law, write the alternating current equation. 3. What is the rms value for current and voltage for our toaster oven circuit? 4. How much average electrical energy J does the toaster oven use if you toast your bread for 1 minute?