The intensity of light from the Sun is 1.3 kW/m2 at the distance of the Earth.The Earth's radius is 6.4 × 106 m.If all the sunlight that hits the Earth were absorbed,what would be the magnitude of the resulting force on the Earth?

A) 0.0087 N B) 1.8 × 108 N C) 5.6 × 108 N D) 87 N A) 0.0087 N B) 1.8 × 108 N C) 5.6 × 108 N D) 87 N

If the radiant energy from the Sun comes in as a plane EM wave of intensity 1 340 W/m2,calculate the peak values of E and B.(µ0 = 4π × 10−7 T⋅m/A,c = 3.00×108 m/s)

A) 330 V/m,3.00 × 10−4 T B) 1 010 V/m,3.35 × 10−6 T C) 330 V/m,3.35 × 10−6 T D) 1 010 V/m,3.00 × 10−4 T A) 330 V/m,3.00 × 10−4 T B) 1 010 V/m,3.35 × 10−6 T C) 330 V/m,3.35 × 10−6 T D) 1 010 V/m,3.00 × 10−4 T

Exam 21: Alternating-Current Circuits and Electromagnetic Waves

A resistor,inductor,and capacitor are connected in series,each with effective (rms)voltage of 64.0 V,87.6 V,and 69.0 V,respectively.What is the value of the effective (rms)voltage of the applied source in the circuit?

(Multiple Choice)

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Question 41

A series circuit has equal values for resistance,capacitive reactance,and inductive reactance.The phase angle for this circuit is:

(Multiple Choice)

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Question 42

The peak voltage of an AC source is 400 V.What is the rms voltage?

(Multiple Choice)

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Question 43

The output voltage of an AC generator is of the form V = V₀ sin(2πft).A typical frequency in household circuits is 60 Hz.Using radians for angular measure in this equation,what is the factor 2πf in radians per second for this frequency?

(Multiple Choice)

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Question 44

What is the wavelength of 97.6-MHz television EM waves? (c = 3 × 10⁸ m/s)

(Multiple Choice)

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Question 45

The intensity of light from the Sun is 1.3 kW/m² at the distance of the Earth.The Earth's radius is 6.4 × 10⁶ m.If all the sunlight that hits the Earth were absorbed,what would be the magnitude of the resulting force on the Earth?

(Multiple Choice)

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Question 46

The electromagnetic radiation that causes tanning:

(Multiple Choice)

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Question 47

Which one of the following scientists first built and operated devices that could emit and detect human-made electromagnetic radiation?

(Multiple Choice)

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Question 48

In an AC circuit,the ratio of average current to maximum current is:

(Multiple Choice)

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Question 49

A series RLC circuit is connected across a 240-Hz AC source,where ΔV_max = 140 V,R = 480 Ω,C = 0.250 μF,and L = 3.25 H.What is the average power delivered to this circuit?

(Multiple Choice)

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Question 50

A 104-Ω resistor is connected in series with a 14.7-µF capacitor and a 56-Hz,136-V (rms)line voltage.If electrical energy costs 4.8¢ per kWh,about how much does it cost to leave this circuit connected for 24 hours?

(Multiple Choice)

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Question 51

What is the average power dissipation in a series RC circuit if R = 6.35 kΩ,C = 2.64 µF,and V = (192 V)cos 115t?

(Multiple Choice)

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Question 52

An electric motor produces 2.0 hp in a V_rms = 120 V circuit.Using 1 hp = 746 W,how long would it take this motor to do 1.0 kWh of work?

(Multiple Choice)

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Question 53

Maxwell developed his theory of electromagnetism by combining previous discoveries.He added his own original hypothesis that:

(Multiple Choice)

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Question 54

Find the resonant frequency for a series RLC circuit where R = 18.0 Ω,C = 9.7 µF,and L = 8.30 mH.

(Multiple Choice)

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Question 55

If the radiant energy from the Sun comes in as a plane EM wave of intensity 1 340 W/m²,calculate the peak values of E and B.(µ₀ = 4π × 10−⁷ T⋅m/A,c = 3.00×10⁸ m/s)

(Multiple Choice)

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Question 56

What is the average power dissipation in an RLC series circuit in which R = 177 Ω,L = 0.060 H,and C = 8.65 µF driven at resonance by a 163-V (rms)source?

(Multiple Choice)

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Question 57

In the Doppler effect for electromagnetic waves,which of the following gives the greatest shift in frequency?

(Multiple Choice)

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Question 58

A monochromatic light wave in vacuum has frequency f₀ and wavelength λ₀.Which of the following are also possible frequency and wavelength combinations for a monochromatic light wave in vacuum?

(Multiple Choice)

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Question 59

Of the various types of electromagnetic radiation,which is the most penetrating through all forms of matter?

(Multiple Choice)

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Question 60

Showing 41 - 60 of 122

Exam 21: Alternating-Current Circuits and Electromagnetic Waves

A resistor,inductor,and capacitor are connected in series,each with effective (rms)voltage of 64.0 V,87.6 V,and 69.0 V,respectively.What is the value of the effective (rms)voltage of the applied source in the circuit?

A series circuit has equal values for resistance,capacitive reactance,and inductive reactance.The phase angle for this circuit is:

The peak voltage of an AC source is 400 V.What is the rms voltage?

The output voltage of an AC generator is of the form V = V​0 sin(2πft).A typical frequency in household circuits is 60 Hz.Using radians for angular measure in this equation,what is the factor 2πf in radians per second for this frequency?

What is the wavelength of 97.6-MHz television EM waves? (c = 3 × 108 m/s)

The intensity of light from the Sun is 1.3 kW/m2 at the distance of the Earth.The Earth's radius is 6.4 × 106 m.If all the sunlight that hits the Earth were absorbed,what would be the magnitude of the resulting force on the Earth?

The electromagnetic radiation that causes tanning:

Which one of the following scientists first built and operated devices that could emit and detect human-made electromagnetic radiation?

In an AC circuit,the ratio of average current to maximum current is:

​A series RLC circuit is connected across a 240-Hz AC source,where ΔVmax = 140 V,R = 480 Ω,C = 0.250 μF,and L = 3.25 H.What is the average power delivered to this circuit?

A 104-Ω resistor is connected in series with a 14.7-µF capacitor and a 56-Hz,136-V (rms)line voltage.If electrical energy costs 4.8¢ per kWh,about how much does it cost to leave this circuit connected for 24 hours?

What is the average power dissipation in a series RC circuit if R = 6.35 kΩ,C = 2.64 µF,and V = (192 V)cos 115t?

An electric motor produces 2.0 hp in a Vrms = 120 V circuit.Using 1 hp = 746 W,how long would it take this motor to do 1.0 kWh of work?

Maxwell developed his theory of electromagnetism by combining previous discoveries.He added his own original hypothesis that:

Find the resonant frequency for a series RLC circuit where R = 18.0 Ω,C = 9.7 µF,and L = 8.30 mH.

If the radiant energy from the Sun comes in as a plane EM wave of intensity 1 340 W/m2,calculate the peak values of E and B.(µ0 = 4π × 10−7 T⋅m/A,c = 3.00×108 m/s)

What is the average power dissipation in an RLC series circuit in which R = 177 Ω,L = 0.060 H,and C = 8.65 µF driven at resonance by a 163-V (rms)source?

In the Doppler effect for electromagnetic waves,which of the following gives the greatest shift in frequency?

A monochromatic light wave in vacuum has frequency f0 and wavelength λ0.Which of the following are also possible frequency and wavelength combinations for a monochromatic light wave in vacuum?

Of the various types of electromagnetic radiation,which is the most penetrating through all forms of matter?

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The output voltage of an AC generator is of the form V = V₀ sin(2πft).A typical frequency in household circuits is 60 Hz.Using radians for angular measure in this equation,what is the factor 2πf in radians per second for this frequency?

What is the wavelength of 97.6-MHz television EM waves? (c = 3 × 10⁸ m/s)

The intensity of light from the Sun is 1.3 kW/m² at the distance of the Earth.The Earth's radius is 6.4 × 10⁶ m.If all the sunlight that hits the Earth were absorbed,what would be the magnitude of the resulting force on the Earth?

A series RLC circuit is connected across a 240-Hz AC source,where ΔV_max = 140 V,R = 480 Ω,C = 0.250 μF,and L = 3.25 H.What is the average power delivered to this circuit?

An electric motor produces 2.0 hp in a V_rms = 120 V circuit.Using 1 hp = 746 W,how long would it take this motor to do 1.0 kWh of work?

If the radiant energy from the Sun comes in as a plane EM wave of intensity 1 340 W/m²,calculate the peak values of E and B.(µ₀ = 4π × 10−⁷ T⋅m/A,c = 3.00×10⁸ m/s)

A monochromatic light wave in vacuum has frequency f₀ and wavelength λ₀.Which of the following are also possible frequency and wavelength combinations for a monochromatic light wave in vacuum?