Part A How much energy is transported across a 8.00 cm area per hour by an EM wave whose E field has an ms strength of 40.0 mV/m ? Submit Request Answer
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A: Given data: Area A=1.30 cm2 Electric field strength E=36.8 mVm=36.8×10-3 Vm We know that Intensity…
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A: speed of rocket (v) = 2×106 m/s B = 1.5 T E = 1.5×106 Vm
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A: Faraday's law:-
Q: An electromangnetic wave has a peak magnetic field of 0.0045 T. What is its peak electric field?
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- Microphones are used to convert sound vibrations to electrical signals. In one kind of microphone, sound waves move a coil of wire up and down in a magnetic field, as shown in (Figure 1). The coil shown has a diameter of 1.6 cm and has 100 turns; the 0.010 T magnetic field points radially out from the north pole to the south. Figure S N Wire coil 1 of 1 Part A If the microphone's emf at some instant is 10 mV, what is the speed of the coil? Express your answer with the appropriate units. V = Value Submit μà Provide Feedback Request Answer Units www ?A rod is moving from left to right toward a resistor along two parallel conducting rails. The entire loop is inside a magnetic field oriented out of the page. The rod is moving 81m/s the magnetic field has a magnitude of 4.1T and induce in the loop is 5.8V. what is the length of the rod in m the resistor has a resistance of 55. What is the current through the rod in A what is the magnitude of the lerntz force on the rod in NA square loop with sideofa= 10 cm is placed in a perpendicular magnetic field of 1.0 T. Themagnetic field is initially pointing in the +k̂direction and flips (changes sign) in Δt= 0.1 s. You are told thatthe field changes at a constant rate. a.What is the direction of the induced current in the square loop? b.Let the resistance of the loop (measured in ohms) be equal to the total length of the wire that forms theloop (measured in cm). What is the magnitude of the induced current in the loop? c.How will the induced current change if you reduce the length of each side of theloop to 5 cm? Will it increaseordecrease,and by what factor?
- What inductance must be connected to a 20 pF capacitor in an oscillator capable of generating 590 nm (i.e., visible) electromagnetic waves? Number i UnitsPart A Estimate the rms electric field in the sunlight that hits Mars, knowing that the Earth receives about 1350 W/m? and that Mars is 1.52 times farther from the Sun (on average) than is the Earth. ? Erms = V/mPart A You've recently read about a chemical laser that generates a 20.0-cm-diameter, 24.0 MW laser beam. One day, after physics class, you start to wonder if you could use the radiation pressure from this laser beam to launch small payloads into orbit. To see if this might be feasible, you do a quick calculation of the acceleration of a 20.0-cm- What speed would such a block have if pushed horizontally 95.0 m along a frictionless track by such a laser? Express your answer with the appropriate units. diameter, 98.0 kg, perfectly absorbing block. HA ? Value Units
- 7bn 1 to 2 sentences, expiain why electromagnetc radiaHon can be modeled as b0th a wave and a partice.Figure CQ19.7 shows a coaxial cable carrying current I in itsinner conductor and a return current of the same magnitudein the opposite direction in the outer conductor. Themagnetic field strength at r = r0 is B0. Find the ratio B /B0 at(a) r = 2r0 and (b) r = 4r0.