Question

What is the electric field amplitude at a distance of 5 m from a 90 W...

What is the electric field amplitude at a distance of 5 m from a 90 W lightbulb? Assume all the power of the bulb goes into light of a single color with λ = 500 nm and assume the bulb produces a spherical wave.

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
We can reasonably model a 40 W incandescent lightbulb as a sphere 5.0 cm in diameter....
We can reasonably model a 40 W incandescent lightbulb as a sphere 5.0 cm in diameter. Typically, only about 5.0 % of the energy goes to visible light; the rest goes largely to nonvisible infrared radiation. What is the visible light intensity (in W/m2) at the surface of the bulb? Express your answer in watts per meter squared. What is the amplitude of the electric field at this surface, for a sinusoidal wave with this intensity? Express your answer with...
An observer experiences a sound wave intensity 9.00×10-5 W⋅m−2W⋅m−2 at a distance 5.22 m from a...
An observer experiences a sound wave intensity 9.00×10-5 W⋅m−2W⋅m−2 at a distance 5.22 m from a source which emits wave in all direction. What is power of the source?
Consider a 120-W red light bulb, producing unpolarized light uniformly in all directions with a wavelength...
Consider a 120-W red light bulb, producing unpolarized light uniformly in all directions with a wavelength of 710 nm. (Assume that the bulb is perfectly efficient, converting all the power delivered to it to light.) A photocell with an area of 1×10-4 m2 is placed a distance of 2.00 m from the bulb. a) (4 pts) What is the frequency of the light reaching the photocell? b) (10 pts) How much energy is delivered to the photocell in one hour?...
The light from a red laser pointer has a wavelength of about 600 nm. If this...
The light from a red laser pointer has a wavelength of about 600 nm. If this laser has a power of 0.18 mW, what is the momentum carried by a 1.8-s pulse of this radiation? (in kg · m/s) The magnetic field associated with an electromagnetic wave has an amplitude of 1.6 μT. (a) What is the amplitude of the electric field associated with this wave? (in V/m) (b) What is the intensity of this wave? (W/m2) (c) What is...
The electric field of a sinusoidal electromagnetic wave obeys the equation E=−(350V/m)sin[(5.89×1015rad/s)t+(1.96×107rad/m)x]E=−(350V/m)sin⁡[(5.89×1015rad/s)t+(1.96×107rad/m)x]. a)what is the amplitude...
The electric field of a sinusoidal electromagnetic wave obeys the equation E=−(350V/m)sin[(5.89×1015rad/s)t+(1.96×107rad/m)x]E=−(350V/m)sin⁡[(5.89×1015rad/s)t+(1.96×107rad/m)x]. a)what is the amplitude of the electric field of this wave? b)what is the amplitude of the magnetic field of this wave? c) what is the frequency of the wave? d)what is the wavelength of the wave? e) what is the period of the wave? f) speed of the wave?
1.A light day is the distance light travels in one day. The planet Neptune is 4.5...
1.A light day is the distance light travels in one day. The planet Neptune is 4.5 x 1012 m from the Sun. Which of these is the approximate distance between the Sun and Neptune in light days? 2.The rms value of the magnetic field in an electromagnetic wave is 3.7 x 10-5 T. Calculate the maximum value of the electric field in the wave. 3.A light bulb emits light uniformly in all directions. At a distance of 0.6 meters from...
a) You stand 11.3 m away from an isotropic point source of light and measure the...
a) You stand 11.3 m away from an isotropic point source of light and measure the light’s electric field amplitude to be 2.4 V/m. What total power is the source emitting? Express your answer in watts. b) The electric field in an electromagnetic wave traveling in vacuum has the following wave function: Ey = (3.1 V/m) sin⁡[(1.7 × 106 rad/m)z + ωt]. What is the frequency of the wave? Express your answer in THz (terahertz). Tera- is 1012.
An electric field has an electric field strength 6000. N/C at a distance of 1.5 m....
An electric field has an electric field strength 6000. N/C at a distance of 1.5 m. What is the strength of the field at a distance of 6.0 m? 24. An alpha (α) particle is positioned in an electric field such that the gravitational force acting on it is equal to the electrostatic force.              (qα = 3.2 x 10–19 C and mα = 6.64 x 10–27 kg) a) What is the direction of the electric field at this point?...
What are the magnitude and direction of the electric field at a distance of 1.5 m...
What are the magnitude and direction of the electric field at a distance of 1.5 m and 50 nC charge?
15.10 At what distance away from a 5 μC point charge is the electric field equal...
15.10 At what distance away from a 5 μC point charge is the electric field equal to 2.6 x 106 N/C? 15.11 Find the electric field of a 7 μC point charge at each distance: a) 10 cm away, b) 25 cm away, and c) 75 cm away.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT