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Light and Optics
Page 3
Questions (269)
Blueshift is observed when *
1 point a luminous object travels alongside an observer a distant luminous object travels rapidly
3 answers
asked anonymously
63 views
Light travels about 186000mi / s The function d(t) = 186000t gives the distance d(t) in miles, that light travels in t seconds.
3 answers
asked by
Tex
40 views
A model shows rays of sunlight moving straight from the sun perpendicular to the surface of the Earth. What are these rays
9 answers
asked anonymously
515 views
5. Blueshift is observed when
* 1 point a luminous object travels alongside an observer a distant luminous object travels rapidly
3 answers
asked by
help me cuz
175 views
Which statement accurately describes a light-year?
It is the shape of a galaxy. It is the distance that light travels in a year.
3 answers
asked anonymously
49 views
What are the two ways that light quality can be characterized? (1 point) Responses direct or indirect light direct or indirect
3 answers
asked by
lil beby
49 views
Light travels at an approximate rate of 1.9×105 mi./sec. There are about 3.2×107 seconds in a year. About how many miles does
3 answers
asked anonymously
66 views
The element in an incandescent light bulb that releases light energy is _____.
I think its C a thin tungsten filament. Am i
5 answers
asked by
:)
995 views
Who discoverd the rainbow colors
1 answer
asked by
Nura
414 views
I know that this seems like a REALLY EASY question, but for some reason I cannot think of anything!
2. What technologies have
2 answers
asked by
Maddison
974 views
I am trying to figure out how many minutes are required for sunlight to travel from the Sun to Earth? Assuming the sun is
3 answers
asked by
Jena
537 views
What is the best definition of "a shadow" that my 3 and 4 year olds could understand?
3 answers
asked by
Marcia
351 views
Is the speed of light directly proportional to the distance traveled?
3 answers
asked by
Kristie
549 views
Light travels at an approximate rate of 1.9. x 10^5 mi/sec. There are about 3.2 x 10^7 seconds in a year. About how many miles
5 answers
asked anonymously
75 views
What are two ways that light quality can be characterized
3 answers
asked anonymously
31 views
Electrons accelerated by a potential difference of 12.87 V pass through a gas of hydrogen atoms at room temperature. Calculate
2 answers
asked by
Beth Macbeth
767 views
My question is what is the ability of some natural materials to reflect and absorb sunlight?
What do they mean natural materials?
3 answers
asked by
Lori
439 views
When white light strikes this object, the light is completely absorbed, with none of it transmitted or reflected. Which type of
1 answer
asked by
Answer
37 views
A model shows rays of sunlight moving straight from the sun perpendicular to the surface of the Earth. What are these rays
1 answer
asked by
Lettuce?
54 views
Light travels at an approximate rate of 1.9×105 mi./sec. There are about 3.2×107 seconds in a year. About how many miles does
1 answer
asked by
Matt
94 views
What is diffuse sunlight?
1 answer
asked by
clayo
383 views
An incident light is monochromatic and of wavelenght 600nm, the kinetic energy of the electron is 2.56 x 10^(-20)J. For light of
1 answer
asked by
Sola
430 views
how do u do this type of problem...
What is the frequency of a photon with a wavelength of 2.25 102 nm? (The speed of light in a
1 answer
asked by
ash
817 views
The illumination of an object by a light source is directly proportional to the strength of the source and inversely
3 answers
asked by
Samantha
3,612 views
In tha light wave above the property labeled A determines which characteristic of visible light?
Brightness Speed Reflection
6 answers
asked by
Help please thanks
2,176 views
If a 80 lightbulb emits 4.0 of the input energy as visible light (average wavelength 550 ) uniformly in all directions, estimate
5 answers
asked by
sarah
1,943 views
When you approach a blinking source of light, the frequency of its blinking is seen to: decrease, increase, or remain the same
3 answers
asked by
clark
1,777 views
An early method of measuring the speed of light makes use of a rotating slotted wheel. A beam of light passes through one of the
2 answers
asked by
Anonymous
1,515 views
light is an electromagnetic wave and travels at a speed of 3.00 x 108 m/s. the human eye is most sensitive to yellow-green light
4 answers
asked by
Joe
1,501 views
Kevin is holding a container with a small hole in it (so that light can get in but not get out). The container absorbs all of
1 answer
asked by
Blue
67 views
Waves that make up light have peaks and valleys just like the ocean. What are the scientific terms for peaks and valleys?
(1
1 answer
asked by
Blue
28 views
Light from the sun reaches Earth in 8.3 min. How far is the Earth from the sun? The
velocity of light is 3 × 108 m/s. Answer in
2 answers
asked by
gera-pleaseeeee
1,302 views
The intensity of light varies inversely as the square of the distance from its source. If two searchlights are 600 meters apart
2 answers
asked by
John
1,123 views
If the speed of light is 186,000 miles / sec, how far does light travel in 8.0 minutes?
3 answers
asked by
Sara
1,078 views
Light travels at a speed of 186,282 miles per second. How could this number be expressed in scientific notation?
1)1,862.82 x 10
2 answers
asked by
katy
1,028 views
The intensity of illumination at a given point is directly proportional to the intensity of the light source and inversely
2 answers
asked by
Jake
998 views
An actress wears a blue dress. How could you use spotlights to make the dress appear black?
I think you could use black spots. Is
2 answers
asked by
abster
948 views
I really need help on this project. I am not asking for all of the answers, I just need someone to explain what I should do for
6 answers
asked by
Melinda May
891 views
Light
travels about 186 comma 000 mi divided by s . The function d left parenthesis t right parenthesis equals 186 comma 000 t
1 answer
asked anonymously
36 views
does sunlight warm your body with light waves yes or no and why
1 answer
asked by
omar
873 views
A 100 watt bulb emits light in all directions. The distance R from the bulb is equal to 1.0 meter.
Complete the table below with
2 answers
asked by
Alex
889 views
A lamp is moved from 26 cm to 90 cm above the pages of a book. Compare the illumination on the book before and after the lamp is
3 answers
asked by
marc
887 views
Your goal is to make the light bulb light up the brightest. What are four things you can do to make the light bulb be the
1 answer
asked anonymously
36 views
Use the fact that the speed of light in a vacuum is about 3.00 108 m/s to determine how many kilometers a pulse from a laser
2 answers
asked by
Anonymous
796 views
What happens to the brightness of light emitted by a light bulb when the current in the filament increases?
2 answers
asked by
Trent
743 views
Use the fact that the speed of light in a vacuum is about 3.00 108 m/s to determine how many kilometers a pulse from a laser
2 answers
asked by
Anonymous
743 views
a spotlight on the ground shines on a wall 12 m away. if a man 2m tall walks from the spotlight toward the building at a speed
2 answers
asked by
Sasha
726 views
At 08:00hrs a 2.0- m-long vertical stick in air casts a shadow 1.8 m long. If the same stick is placed at 08:00hrs in air in a
1 answer
asked by
help?
700 views
The photoelectric effect is a concern in space, where parts of a spacecraft exposed to the sunlight will develop a net positive
4 answers
asked by
Kara
699 views
Sodium vapor lamps, used for public lighting, emit yellow light of wavelength 589 nm. How much energy is emitted by 5.00 mg of
1 answer
asked by
Kamila
717 views
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