Question

# A source of electromagnetic waves radiates power uniformly in all directions at a single frequency. At...

A source of electromagnetic waves radiates power uniformly in all directions at a single frequency. At a distance of 5.50 km from the source, a detector measures the intensity of the wave to be 24.0 μW/m2. What is the peak value of the magnetic field at the detector due to the wave?
4.48×10-10 T

What is the average power radiated by the source?
9.12×103 W

Now the detector is replaced with a perfectly absorbing sheet normal to the incident flux, with surface area 1.90 m2. What is the force on the sheet due to the wave
?

#### Earn Coins

Coins can be redeemed for fabulous gifts.

Similar Homework Help Questions
• ### A light bulb radiates 190 nW of single-frequency sinusoidal electromagnetic waves uniformly in all directions. Calculate...

A light bulb radiates 190 nW of single-frequency sinusoidal electromagnetic waves uniformly in all directions. Calculate the average intensity of the light from this bulb at a distance of 45 mm.

• ### A spherical source radiates sound uniformly in all directions. At a distance of 14 m, the...

A spherical source radiates sound uniformly in all directions. At a distance of 14 m, the sound intensity level is 90 dB. What power is radiated by this source?

• ### A spherical source radiates sound uniformly in all directions. At a distance of 9 m, the...

A spherical source radiates sound uniformly in all directions. At a distance of 9 m, the sound intensity level is 100 dB. What power is radiated by this source?

• ### A sound wave radiates from a source in all directions. If the power of the sound...

A sound wave radiates from a source in all directions. If the power of the sound source is 200 watts, then the intensity level of the sound wave 1000 m from the source is (in dB)

• ### A light source emits EM waves of 4.00 W total power uniformly in all directions. Assume...

A light source emits EM waves of 4.00 W total power uniformly in all directions. Assume the wave have a single frequency (monochromatic) a) What is the intensity of the waves at 2.00 m from the light source? b) What iw the electric eld amplitude Eo produced at 2.00 m from the light source?

• ### An incandescent light bulb radiates uniformly in all directions with a total average power of 1.0...

An incandescent light bulb radiates uniformly in all directions with a total average power of 1.0 × 102 W. What is the average intensity of the light at a distance of 1.0 m from the bulb?

• ### A light bulb emits spherical electromagnetic waves uniformly in all directions. Find (a) the intensity, (b)...

A light bulb emits spherical electromagnetic waves uniformly in all directions. Find (a) the intensity, (b) the radiation pressure, and (c) the electric and magnetic field magnitudes at a distance of 3.0 m from the light bulb, assuming that 50 W of electromagnetic radiation is emitted

• ### A source emits sound waves equally in all directions. The intensity of the waves 2.50 m...

A source emits sound waves equally in all directions. The intensity of the waves 2.50 m from the source is 1.90 times 10^-4 W/m^2. Find the power of the source, If the diameter of your eardrum is 8.4 mm, how far from the source do you have to be located so that your ears combined receive 0.42 times 10^-12 J of energy each second?

• ### A strong light bulb radiates light in all directions. The average power of the EM waves by this bulb is 1910.0 W

A strong light bulb radiates light in all directions. The average power of the EM waves by this bulb is 1910.0 W. At a distance r = 0.6 m from the bulb, the EM waves spread over a surface area of 4πr2 (a) Calculate the Average Intensity. Keep 1 decimal place. (b) Calculate the Average Energy Density (including both the electric field and the magnetic field). Write the result in terms of 10-5J/m3. Keep 4 decimal places.(c) Calculate the Average (rms) Electric...

• ### A source emits sound uniformly in all directions. There are no reflections of the sound. At...

A source emits sound uniformly in all directions. There are no reflections of the sound. At a distance of 12 m from the source, the intensity of the sound is 3.3 × 10-3 W/m2. What is the total sound power P emitted by the source?