Which of the following is correct for the two coherent light waves to produce zero light? The light waves should travel in perpendicular directions. The light waves are in phase with each other. The light waves are out of phase

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  1. Science Help Plzz

    1. The images above show particles in a medium. Which of the following shows the worst conditions for a sound wave travel? A B C D is the answer A? Which of the following correctly describes a radio wave? A long wavelength and high frequency B long

  2. PHYSICS

    Light waves are electromagnetic waves that travel at 3.00 108 m/s. The eye is most sensitive to light having a wavelength of 5.50 10-7 m. (a) Find the frequency of this light wave. __________ Hz (b) Find its period. _______________ s

  3. Chemistry

    According to the quantum-mechanical model for the hydrogen atom, which of the following transitions would produce light with longer wavelength: 3p to 2s or 4p to 2s? A) The 3p to 2s transition would produce light with longer wavelength. B) The 4p to 2s

  4. Chemistry

    What does the photoelectric effect show about the connection between light and electrons? A. Light can remove electrons from atoms. B. Electrons are composed of light. C. Light is composed of electrons. D. It takes 2 photons of light to cause 1 electron to

  5. algebra

    The light intensity of a light bulb varies inversely as the square of the distance from the light bulb. The function I(d) = k/d^2 models this situation, where I is the light intensity, d is the distance from a light source, and k is a constant. If the

  6. Physics

    A monochromatic light source used in a diffraction experiment has a wavelength of 4.60 x 10- 7 m. (a) What is the frequency of this light? When you input large numbers such as those in this problem, then input the numbers with parenthesis so as to obtain

  7. Science

    1.The images above show particles in a medium. Which of the following shows the worst conditions for a sound wave to travel? A B C D 2.Which of the following correctly describes a radio wave? A.long wavelength and high frequency B.long wavelength and low

  8. Science HW - - - check my answers?

    1. Compare the two light waves above. Which wave would produce the brightest light and which wave would have the least energy? a. wave A; wave A b. wave A; wave B c. wave B; wave A d. wave B; wave B 2. Which waves have the longest wavelength and lowest

  9. Physics

    Rank in order the following according to their speeds, from fastest (1) to slowest (5): (i) 425-nm-wavelength light through a pane of glass, (ii) 500-nm-wavelength light through air, (iii) 540-nm-wavelength light through water, (iv) 670-nm-wavelength light

  10. Physics

    Laser Pointers emit light waves whose wavelength is 670 nm. What is the frequency for this light?

  11. math

    a light year is the distance light travels in one year. one light year is about 5.9x10^12 mi. If it takes light 3 months to travel from one star to another, about how far apart are the stars? 5.9x10^12/12*3 I got 1.5x10^12 mi Is this correct?

  12. science

    When you go out into the sun, the UV light can give you a tan. UV light has a frequency of 7.89 x 1014 Hz. What is the wavelength of UV light? Please use 3 x 108 m/s for the speed of light (c). You will need to upload a file to show how to solve this

  13. Chemistry

    Describe the spectrum of the light from a fluorescent lamp and from an incandescent (tungsten filament) lamp, and try to explain what you observe. So fluorescent lamps use electricity to excite mercury vapour, and the excited atoms produce short-wave UV

  14. Probability

    A company produces light bulbs, and finds that approximately 2% of the light bulbs they produce are defective. The company wants to make a money-back guarantee that in every box of 10 light bulbs, no more than 1 will be defective. What is the probability

  15. Physical Science

    QUESTION---Which waves have wavelengths longer than those of visible light? MY ANSWER--Infrared light, microwaves and radio waves have wavelengths longer than visible light. Radio waves have the longest wavelength. Are there any others?

  16. Science

    Light waves strike a lamp shade. What property of light is demonstrated? A.diffuse reflection B.diffraction c.refraction D.regular reflection I think the answer is C but im not sure Please help

  17. CICI

    How do light microscopes work? Light microscopes use an electron beam to create an image of a specimen. Light microscopes use a combination of light and lenses to magnify a specimen.*** Light microscopes use a tiny tip that traces a specimen, enlarging it.

  18. physics

    Which has the longest wavelengths-light waves, x-rays, or radio waves?

  19. Science

    Which part of the electromagnetic spectrum is divided into seven ranges of wavelengths and is the part visible to the human eye? A Television waves B Visible light C infrared light D telemetry waves I believe it's visible light?

  20. science

    Light waves strike a lamp shade. What property of light is demonstrated? diffuse reflection* diffraction refraction regular reflection

  21. economics

    Suppose three neighbors must vote on installation of a traffic light that costs $210. All three will share the cost of the light – that is, each person will contribute $70 to the installation. Leona values the light at $50; Lionel values the light at

  22. Astronomy

    Based on what you learned about light, select all of the correct statements from the following list. The only type of electromagnetic radiation that is actually considered light is visible light. High frequency photons carry more energy than long

  23. physics

    The wavelength of the electromagnetic waves is 200 nm. Which of following regions does it belong to? visible light region ultra violet light infrared region x-ray region

  24. science

    How do the speeds of light waves and sound waves compare? Sound waves can travel faster depending on the medium. Sound waves always travel faster than light waves.**** Light waves travel at the same speed as sound waves. Light waves travel about 1 million

  25. Science

    Certain seismic waves travel as.. A) electromagnetic and transverse waves. B) visible light and longitudinal waves. C) longitudinal and transverse waves. D) compression and visible light waves. I have no idea I never learned this:(

  26. Science

    How can the behavior of light be described as it leaves the vacuum of space and enters the Earth's atmosphere? Questions Light waves slow down as they enter the Earth's atmosphere from space. Light waves continue at the same speed as they enter the Earth's

  27. 8th grade Physics

    Explain whether the photons emitted by a bright light bulb are more energetic than those emitted by a dim light bulb of the same color. How does the color of the light bulbs determine the amount of energy of the electromagnetic waves?

  28. science

    1. The images above show particles in a medium. Which of the following shows the worst conditions for a sound wave travel? A B C D is the answer A? Which of the following correctly describes a radio wave? A long wavelength and high frequency B long

  29. astronomy

    what does the phenomenon of interference demonstrate? a)the wave nature of light b)the polarization of light waves c)the quantization of the atomic orbitals d) the particle nature of the photon e) the process of ionization -how about for diffraction?

  30. Physics

    Which of the following is correct for the two coherent light waves to produce zero light? The light waves should travel in perpendicular directions. The light waves are in phase with each other. The light waves are out of phase with each other. The light

  31. science

    Light waves are traveling through glass. If the wavelength of some part of the light wave is 4 x 10-7 m and the frequency of that light is 5 x 1014 Hz, what is the speed of light through the glass? 8 x 10-22 m/s 1 x 107 m/s 1.25 x 1021 m/s 2 x 108 m/s

  32. Science

    Which of these statements concerning the interaction of light waves with the glass of a greenhouse is correct? A. Infrared is transmitted through the glass and is changed to heat B. The glass reflects ultraviolet waves C. Visible light is transmitted

  33. physics

    In a double-slit experiment, two beams of coherent light traveling different paths arrive on a screen some distance away. What is the path difference between the two waves corresponding to the third bright band out from the central bright band? The path

  34. Chem

    How many orbitals are in the p sublevel? A 2 B 3 C 4 D 5 A? Place gamma rays, infrared, microwaves, radio waves, ultraviolet, visible light, and x-rays in order from largest wavelength to smallest wavelength. A Gamma rays, infrared, microwaves, radio

  35. IPC

    Explain whether the photons emitted by a bright light bulb are more energetic than those emitted by a dim light bulb of the same color. how does the color of the light bulb determine the amount of energy of the electromagnetic waves?

  36. physics

    The wavelengths of various colours of light can vary. Violet light can have a wavelength of 400 nm and red light can have a wavelength of 700 nm. If these two colours of light pass by a very sharp edge such as a razor blade, which light will bring about

  37. Physics

    A balloon appears to be yellow when seen in white light. Explain the colour it will appear in a) green light and b) magenta light. I really don't undestand the subtractive theory of light, and it applies to this question. Can you please explain to me how

  38. Physics

    I am to fill in the blanks without a word bank, my answers are in brackets. 1. When light waves reflect from media in which the speed of light is slower, their phase (crest or trough) is ____ 2. The trick to being able to observe interference patterns for

  39. science- help needed.

    each statement is false. rewrite each one as a true statement,showing as much scientific understand as possible. 1. light waves travel slower than sound waves. 2.a black object will reflect white light. 3.a translucent object lets no light through. 4.an

  40. science

    Light waves are traveling through glass. If the wavelength of some part of the light wave is 4 x 10-7 m and the frequency of that light is 5 x 1014 Hz, what is the speed of light through the glass?

  41. Physics - light

    1. Blue light and yellow light combine to produce white light because they constructively interfere. Explain why 2. You shine yellow light on an object and it appears black. What color might the object be if illuminated by red light? Justify your response.

  42. physics

    If you stand 3.0 m in front of a flat mirror, how far away from you would yourimage be in the mirror? 6.0 m If light waves are coherent, a. they shift over time b. their intensity is less than that of incoherent light c. they remain in phase d. they have

  43. Science

    In physics,Light chapter: A/c to huygens principle light travels in the form of Waves but When he explained Ripple's tank experiment he showed that light travels in the form of particles{in diagram}Why?

  44. Science

    1. Compare the two light waves above. Which wave would produce the brightest light and which wave would have the least energy? (1 point) a. wave A; wave A b. wave A; wave B c. wave B; wave A d. wave B; wave B Is it C?

  45. physical science

    Visible light consists of electromagnetic waves with wavelengths (in air) in the range 400 - 700 nm. What are the frequencies of visible light?

  46. science

    3x10 power 18 photon of certain light radian are found to produce 1.5 j of energy calculate wavelength of light radiation

  47. genetics

    3. Assume that there are 12 map units between two loci in the mouse and that you are able to microscopically observe meiotic chromosomes in this organism. If you examined 200 primary oocytes, in how many would you expect to see a chiasma between the two

  48. Physics

    In the first application of interferometric methods in radio astronomy, Australian astronomers observed the interference between a radio wave arriving at their antenna directly from the Sun and on a path involving reflection from the surface of the sea.

  49. Physics

    In our everyday environment, diffraction is much more evident for sound waves than for light waves. Why is this so?

  50. physiiics

    Which of the following is correct for the two coherent light waves to produce zero light? The light waves should travel in perpendicular directions. The light waves are in phase with each other The light waves are out of phase with each other. The light

  51. Physics

    Which of the following is correct for the two coherent light waves to produce zero light? The light waves should travel in perpendicular directions. The light waves are in phase with each other. The light waves are out of phase with each other. The light

  52. Physics

    Which of the following is correct for the two coherent light waves to produce zero light?

  53. physical science

    Light whose waves all have the same wavelength, direction, and coincidental peaks is called A) coherent light B) incandescent light C) fluorescent light D) neon light I'm not sure but I think maybe B? Please help me thanks so much.

  54. Physics

    What is stimulated emission? a. the process of distinguishing between sources of electromagnetic waves. b. the process of reducing mechanical waves' energy. c. the process of amplifying sound waves. d. producing move light waves which are coherent with an

  55. physics

    please check these: a laser can be used a. to treat glaucoma b. to measure distance c. to read bar codes d. all of the above D in a laser, all of the following forms of energy can be converted into coherent light except a. chemical energy b. electrical

  56. Physical Science

    I need help with a few of these questions: 1.Which of the following waves are mechanical waves? A.light waves B.microwaves C.radio waves D.sound waves I think it's D? 2.Which gives the frequency of the wave in terms of its peaks? A.the height of the

  57. physics

    Electromagnetic radiation (light) consists of waves. More than a century ago, scientists thought that light, like other waves, required a medium (called the ether) to support its transmission. Glass, having a typical mass density of ñ = 2690 kg/m3, also

  58. physics

    Electromagnetic radiation (light) consists of waves. More than a century ago, scientists thought that light, like other waves, required a medium (called the ether) to support its transmission. Glass, having a typical mass density of ρ = 2770 kg/m3, also

  59. check/bio!!!!

    okay the question is as follows: Three plants are placed in 3 different terrariums in 3 different light conditions. Plant A is placed in blue light, plant B in green light, and plant C in yellow light. In which case will there be an increase in the oxygen

  60. physics

    These are problems I have been stuck on and can't figure out. Help would be greatly appreciated. 1. Blue and yellow light combinte to produce white light because ______ (Please explain what it's the correct answer) a.they absorb each other's wavelengths b.

  61. Science

    I needed help with this question. I’m not sure I got it quite right. Is it correct to say that in every case, without exception, any radio wave travels faster than any sound wave? ANSWER: Yes, it is correct to say because radio waves are electromagnetic

  62. physics

    Can anyone explain this to me? Is it correct to say that the difference in the patterns produced by monochromatic and white light is caused by the fact that monochromatic light waves interfere with each other when they pass through a diffraction

  63. science

    what combination of mediums will produce a stright line of light? how do you correct for hyperopia? how do you correct for myopia? what kind of people have an astigmatism? what part of the eye act as a lens and what part acts as a screen? how do different

  64. Physical Science

    These are two questions that I need help with: 1.What statement about light traveling through water and glass is true? A.Water and glass absorb different colors of light B.Light changes colors as it passes from water to glass C.Light travels at different

  65. HELP MEH PLS

    Marie and Pierre Curie coined which term to describe the ability of certain elements to give off radiation spontaneously? AM signals travel as changes in ____ Why does the wave of light bend toward the normal as it enters water? The Curies discovered which

  66. science

    b. Explore mechanical waves (like sound and water waves) and/or electromagnetic waves (like light waves). Consider how these waves are created, what is accomplished by them, what kinds of things they can be used for, and how they are impacted (strengthened

  67. physics

    Can anyone explain this to me? Is it correct to say that the difference in the patterns produced by monochromatic and white light is caused by the fact that monochromatic light waves interfere with each other when they pass through a diffraction

  68. physics

    Can anyone explain this to me? Is it correct to say that the difference in the patterns produced by monochromatic and white light is caused by the fact that monochromatic light waves interfere with each other when they pass through a diffraction

  69. Physics -- check answer please

    Refraction is: a) the way light behaves when it goes through a narrow opening b)the way teo light sources interact to produce interference patterns c) the absorption of one component of the electric field d) none of the above are correct my answer: d

  70. Physics

    A square has sides of length L. In the lower-right and lower-left corners there are two sources of light waves, one in each corner, that emit identical in-phase light waves of wavelength 8.28 m in all directions. What is the minimum value of L such that

  71. chemistry

    need essay on,(a)Briefly describe the important similarity between light and matter revealed by Louis de Broglie's discovery of matter waves, and (b)list two important differences between light and matter waves.

  72. math

    What properties of light do the frequency and amplitude of light waves represent?

  73. physics

    Can you please help me find the theory of Robert Hooke on Wave Explanation of Colors. Please... My report about this is due on Monday. Thank you for helping. God bless. According to (Broken Link Removed) , "Robert Hooke (1635-1703) who started as an

  74. Science

    I am really confused about this. If anyone can help it would be great! I already talked to my teacher about it and I still don't get it. I looked in my book, still no. Can anyone tell me please? How does density affect the speed of light? How does this

  75. Science grade 3

    Does light always flow from light to dark places? T or False and explain. I say no becasue light shines and it does not flow Photons are emmitted and radiate in all directions until they are absorbed or reflected. So no is correct. They do not flow from

  76. science please help

    Sources and uses for the following: Radio waves Microwaves Infrared Waves Visible Light Waves Ultraviolet Waves X-Rays Gamma rays

  77. Physical Science

    I need help with some of these questions: 1.If you look at a red leaf, what describes what happens when you see it? A.The leaf absorbs red light from our eyes B.Our eyes reflect red light back to the leaf C.Red light reflected from the leaf enters our eyes

  78. Cosmolgy

    Which of these is the correct relationship between b, the bias factor, the fluctuations in mass (Δρ/ρ)mass and the fluctuations in light (Δρ/ρ)light? b2(Δρ/ρ)light = (Δρ/ρ)mass−1 (Δρ/ρ)light (Δρ/ρ)mass=b (Δρ/ρ)light=b(Δρ/ρ)mass

  79. science sound and light!!!

    which of the following involves the diffraction of light waves? A.a glass of water acts like a prism, splitting sunlight from a window into a rainbow on the far wall. B.a stained glass window only allows some of the light from the sun into a room. C.light

  80. science

    Electromagnetic radiation with a wavelength of 700 nm would be: a)x-rays b)red light c)violet light d)ultraviolet light e)microwaves I thought it would be visible light but that's not an option.

  81. Physics

    Why is it necessary to collimate the light source before using the prism to disperse the light? A. If white light enters the prism with different angles, some of the blue light will exit the prism with the same angle as the orange light. B. If white light

  82. Physics

    When you approach a blinking source of light, the frequency of its blinking is seen to: decrease, increase, or remain the same always. I THINK IT IS INCREASING. If you are traveling at close to the speed of light and shine a flashlight out in front of you,

  83. Biology

    O2 is a product of: A. light-dependent reactions. B. light-independent reactions. C. light-capturing events. D. All of the choices are correct. Is the answer D?

  84. analogies

    furnace:fireplace::lamp: ? log,street light,light bulb, headlight,candle is light bulb correct?

  85. Physics

    Subject: Light and Geometric Optics Question: Where must a light source be placed in front of a concave mirror for a) light energy to be concentrated to a single point b)the light to be reflected in a parallel beam?

  86. psychology

    * Take about 15 index cards and a flashlight that is opaque on all sides (so that light shines only through the front) into a very dark room. * Place all 15 cards over the beam of light. * Slowly remove the cards one at a time until you can barely detect

  87. Biology

    Which materials produce during the light reactions of photosynthesis are essential to the dark reactions? Light Reactions (Occurs in Grana) The purpose of the light reactions is to change light energy into chemical energy of ATP and NADPH. a) Require light

  88. can anyone tell me if im right if not, help me??

    3. Assume that there are 12 map units between two loci in the mouse and that you are able to microscopically observe meiotic chromosomes in this organism. If you examined 200 primary oocytes, in how many would you expect to see a chiasma between the two

  89. SCIENCE

    This assignment is dealing with the electromagnetic spectrum. I have some questions to ask you. 1. Which waves can be used to SEE molecules? 2. Why can't you use visible light to SEE molecules? 3. Some insects like bees can SEE light of shorter wavelengths

  90. physics

    How does an incandescent light bulb produce light?

  91. Science

    Could someone please explain to me in a simple way how FM, AM, and XM radio signals work? No one I ask seems to know. Thanks for the help. Radio waves are part of a general class of waves known as electromagnetic waves. In essence, they are electrical and

  92. Physics

    what do you call the source of an intense narrow beam of coherent monochromatic light?

  93. physics

    The index of refraction of water for a given monochromatic light in water is n=4/3. The wavelength of this light in water is 500nm. a) find the speed of this light in water. b) find the energy of one photon of this light . Does this enerdy change if this

  94. Physics

    Please Help! In our everyday environment, diffraction is much more evident for sound waves than for light waves. Why is this true?

  95. Science

    A certain type of laser emits light that has a frequency of 4.0 × 1014 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 2.3 × 10-11 s. (a) How many wavelengths are there in one pulse? (b) The light enters a pool of

  96. Physics

    A certain type of laser emits light that has a frequency of 4.7 1014 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 2.8 10-11 s. (a) How many wavelengths are there in one pulse? (b) The light enters a pool of water.

  97. physics

    What vibrates in the following types of wave motions (i) light waves. (ii) sound waves. (iii) x-rays.

  98. Physics - Constructive Interference

    A square has sides of length L. In the lower-right and lower-left corners there are two sources of light waves, one in each corner, that emit identical in-phase light waves of wavelength 8.28 m in all directions. What is the minimum value of L such that

  99. Astronomy

    How do we image dark matter? (a) We see light from galaxies behind the bullet cluster that is bent (gravitationally lensed) due to the matter (regular and dark) in the bullet cluster. (b) We see light from the gas in the two bullet cluster galaxies and we

  100. physical

    Light is shone on a metal and photoelectrons are emitted. Can you tell me the three things from the list below which might cause the photoelectron emission to stop. Decreasing the intensity of the light Increasing the frequency of the light Decreasing the

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