Answered: What is the intensity of a 100 -W light…

Science

Physics

What is the intensity of a 100 -W light bulb at a distance 10 cm from the bulb's center? (in units of W/m2)

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter16: Waves

Section: Chapter Questions

Problem 79P: A device called an insolation meter is used to measure the intensity of sunlight. It has an area of...

See similar textbooks

Related questions

Q: A cell phone operates at a frequency of 700MHz. What is the wave length of the waves produced as…

A: Given data: - The operating frequency is f = 700 MHz.

Q: Suppose an intensity 306 mW/m2 lands on a detector of area 1.3 cm2 . Calculate the power generated…

Q: A typical microwave oven produces radiation at a frequency of 1.0 x 1010 hertz. What is the…

Q: A meteorologist for a TV station is using radar to determine the distance to a cloud. He notes that…

Q: About 5% of the power of a 100 W light bulb is converted to visible radiation. What is the average…

A: Power output of light = 0.05*100 = 5 Watt

Q: On its highest power setting, a microwave oven increases the temperature of 0.400 kg of spaghetti by…

A: The rate of energy absorption can be obtained as, P=QT =mcΔTT =0.400 kg3.76×103 J·kg-1·°C-145°C120…

Q: Microwaves used in microwave ovens often have a wave- length of about 12 cm. What is the frequency…

A: The relation between wavelength λ and frequency ν for electromagnetic waves is given by, ν=cλ Where…

Q: what is the wavelenght of a carrier wave with a frequency of 100 megahertz? a. 3.0m b. 7.5m…

Q: Red Visible light has a wavelength of 6.5x10^-7m what is the frequency in s^-1

A: Required : Frequency of light

Q: If the Earth–Sun distance were doubled, the intensity of radiation from the Sun that reaches the…

A: The Earth-Sun distance were doubled, the intensity of radiation is inversely proportional to d2.…

Q: A 100 milliwatt signal is sent over a 1 km long cable, which attenuates the signal 0.04 dB/meter.…

A: Given : Power of signal sent over 1km, Pi = 100 mW Attenuation per meter, k = 0.04 dB/m 1km = 1000 m…

Q: intensity of sunlight is around 1330 W/m2 at the top of earth’s atmosphere. If the sunlight is all…

A: The sunlight falling on the top of Earth atmosphere exerts a normal force per unit area of the…

Q: The antenna for an AM radio station is a 69.5-m-high tower whose height is equal to one-quarter the…

A: Given, Height h = 69.5 m

Q: Near the earth the intensity of radiation from the sun is 1.35 kW/m2. What volume of space in this…

Q: A bowl of bulalo is being heated in a microwave oven. The effective area of the bulalo that is…

A: Area of the microwave is A = 1.6 x 10-2 m2 Mass of the bulalo is m = 0.25 kg Specific heat capacity…

Q: A radar pulse returns 4.0x 10-8 s after it was sent out and reflected by an object what is the total…

A: Formula of distance traveled by radar pulse is as follows; d=t2×c…

Q: What is the intensity of a 120 -W light bulb at a distance 6 cm from the bulb's center?

A: Given that: P=120 W d=6 cm =0.06 m

Q: The power output of a certain public-address speaker is 6.40 W. Suppose it broadcasts equally in all…

A: Given data The power output by the speaker is given as P = 6.40 W. a) The pain threshold of sound…

Q: Two ships are moving along a line due east (Fig. P14.68). The trailing vessel has a speed relative…

Q: The radiation power density of the sun is approximately 150 W/m² in some locations on the Earth…

A: Write the given values with the suitable variables. I=150 W/m2A=0.6 m×1.6 m=0.96 m2θ=45° Here, I, A,…

Q: A radar pulse returns to the receiver after a total travel time of 9.00 x 10-4 s. How far away is…

A: Generally the speed of radar pulse is equal to the speed of light i.e c=3*108 ms-1 Let’s assume…

Q: The Sun emits electromagnetic waves equally in all directions. The intensity at Earth’s upper…

A: Intensity of EM waves at earth's upper atmosphere (I) = 1.4 kWm2= 1400 Wm2distance between earth and…

Q: Electromagnetic radiation in the Ultraviolet (A) range has a wavelength of 340 nm and a speed of 3.0…

Q: The Sun delivers an average power of 1 370. W/m2 to the topof Earth’s atmosphere. Find the…

Q: Satellite TV is broadcast from satellites that orbit the earth. Their antennas broadcast a 15 kW…

A: So to solve this question we first need to find the intensity (I) , which can be derived by…

Q: The power output of a certain public-address speaker is 6.20 W. Suppose it broadcasts equally in all…

A: Given data: The power output of the public-address speaker is, Parg= 6.20 W The threshold Intensity…

Q: The Sun delivers an average power of 14.84 W/m2 to the top of Saturn's atmosphere. Find the…

Q: Medical Application - (a) What is the intensity in W/m2 of a laser beam used to burn away cancerous…

A: (a) The intensity of a laser beam is given as, Here, P and A represent the power output and the…

Q: In laser eye surgery, each laser pulse has power of 70 kW. The beam focuses on a circle of 0.5 mm…

A: GivenPower of each Laser pulse ,P=70 kWRadius of circle ,r=0.5 mm

Q: Energy from the Sun arrives at the top of the Earth's atmosphere with an intensity of 1.30 kW/m2.…

Q: Blue light has a frequency of about 7.5 x 10^14hz. What is the corresponding wavelength?

A: the expression for the wavelength is

Q: Radio waves transmitted through space at 3 x10°m/s by the Voyager spacecraft have a wavelength of…

A: Given data: Speed (v) = 3×108 m/s Wavelength (λ) = 0.133 m Required: The frequency (f)

Q: The power output of a certain public-address speaker is 7.10 W. Suppose it broadcasts equally in all…

Q: What is the frequency (in Hertz) of red light that has a wavelength of 689 nm?

A: Using the relationship between frequency and wavelength, c=νλ, ν=cλ,

Q: The intensity of sunlight that reaches Earth’s atmosphere is 1348 W/m2. What is the intensity of the…

Q: The intensity of sunlight at the top of the earth’s atmosphere is approximately 1400 W/m2. Mars is…

A: The magnitude of intensity varies as the inverse of square distance to the source: I∝1r2 I=Kr2…

Q: Doppler shift of the frequency of the ultrasonic waves on reflection from the red blood cells is 25…

Q: The intensity of electromagnetic waves from the sun is 1.4 kW/m2 just above the earth's atmosphere.…

Q: A radar pulse returns to the receiver after a total travel time of 4.00 x 10^(-4)s. How far away is…

Q: The intensity of the sound wave from a jet airplane as it is taking off is 105 W/m² at a distance of…

Concept explainers

Electromagnetic Waves

Electromagnetic waves are waves that consist of magnetic field and electric field components perpendicular to each other. These field components are also perpendicular to the direction of propagation of the wave.

Question

What is the intensity of a 100 -W light bulb at a distance 10 cm from the bulb's
center?
(in units of W/m2)

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A radio station broadcasts its radio waves with a power of 50,000 W. What would be the intensity of this signal if it is received on a planet orbiting Proxima Centuri, the closest star to our Sun, at 4.243 ly away?
Radio station WWVB, operated by the National Institute of Standards and Technology (NIST) from Fort Collins, Colorado, at a low frequency of 60 kHz, broadcasts a time synchronization signal whose range covers the entire continental US. The timing of the synchronization signal is controlled by a set of atomic clocks to an accuracy of 101012 s, and repeats every 1 minute. The signal is used for devices, such as radio-controlled watches, that automatically synchronize with it at preset local times. WWVB's long wavelength signal tends to propagate close to the ground. (a) Calculate the wavelength of the radio waves from WWVB. (b) Estimate the error that the travel time of the signal causes in synchronizing a radio controlled watch in Norfolk, Virginia, which is 1570 mi (2527 km) from Fort Collins, Colorado.
Energy from the Sun arrives at the top of Earth’s atmosphere with an intensity of 1400 W/m2. How long does it take for 1.80109 J to arrive on an area of 1.00 m2?
What is the intensity in W/m2 of a laser beam used to burn away cancerous tissue that, when 94.0% absorbed, puts 540 J of energy into a circular spot 2.20 mm in diameter in 4.00 s? Discuss how this intensity compares to the average intensity of sunlight (about 700 W/m2) and the implications it would have if the laser beam entered your eye. Note how your answer depends on the time duration of the exposure.
The intensity of solar radiation at the top of the Earth’s atmosphere is 1 370 W/m2. Assuming 60% of the incoming solar energy reaches the Earth’s surface and you absorb 50% of the incident energy, make an order-of-magnitude estimate of the amount of solar energy you absorb if you sunbathe for 60 minutes.
The intensity of solar radiation at the top of the Earth's atmosphere is 1 370 W/m². Assuming 60% of the incoming solar energy reaches the Earth's surface and you absorb 50% of the incident energy, make an order-of-magnitude if you sunbathe for 60 minutes. estimate of the amount of solar energy you absorb
A hanging lamp with a 70-W omni-directional bulb has a hemi-spherical lamp shade of height, H = 0.55 m, as shown below. (a) Find the total (average) power received across the shade. W (b) Calculate the intensity at a point on the shade. W/m²
(a) What is the intensity in W/m² of a laser beam used to burn away cancerous tissue that, when 90.0% absorbed, puts 500 J of energy into a circular spot 2.3 mm in diameter in 3 s? 2 W/m (b) Reflect on how this intensity compares to the average intensity of sunlight (about 1W/m²) and the implications that would have if the laser beam entered your eye. Note how your answer depends on the time duration of the exposure. The intensity of a laser is abc lasers can be very damaging 100 1,000 10E7 - 10E8 10E12 times that of the sun, so clearly
The intensity of solar radiation at the top of Earth’s atmosphereis 1 370 W/m3. Assuming 60% of the incoming solar energyreaches Earth’s surface and assuming you absorb 50% of theincident energy, make an order - of - magnitude estimate of theamount of solar energy you absorb in a 60 - minute sunbath.
What is the intensity in W/m2 of a laser beam used to burn away cancerous tissue that puts 374 J of energy into a circular spot 2.00 mm in diameter in 4.67 s? Compare this to the average intensity of sunlight (about 700 W/m2). answer blank times 10^7
The intensity of solar radiation at the top of the Earth's atmosphere is 1 402 W/m2. Assuming 60% of the incoming solar energy reaches the Earth's surface and you absorb 50% of the incident energy, find the amount of solar energy you absorb if you sunbathe for 64 minutes. (Suppose you cover a 1.5 m × 0.3 m section of beach blanket and the elevation angle of the Sun is 60°.)
(a) What is the intensity in W/m2 of a laser beam used to burn away cancerous tissue that, when 90.0% absorbed, puts 500 J of energy into a circular spot 2.00 mm in diameter in 4.00 s? (b) Discuss how this intensity compares to the average intensity of sunlight (about 700 W/m2 ) and the implications that would have if the laser beam entered your eye. Note how your answer depends on the time duration of the exposure.