fiber cable 3. A light ray enter from left to a fiber cable whose diameter is 2 mm and length is e = 30° 566 m as shown. Determine L = 566 m (a) the number of TIRS that the ray can make in the cable. (b) the time required for the light ray to pass through the cable.
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- A ray of light crosses the boundary between some substance with n = 1.54 and air, going from the substance into air. If the angle of incidence is 29◦ what is the angle of refraction? Calculate to 1decimal.Light travels a distance of 0.884 m in 2.00 ns in a given substance. What is the index of refraction of this substance? Express your answer to three significant figures.A light ray traveling in water is incident upon a transparent medium. The angle of incidence is 45.0°, and the transmitted ray is refracted at an angle of 20.0°. What is the speed of light in the transparent medium (in m/s)? X What is the index of refraction of the transparent medium? How is it related to the speed of light in vacuum and the speed of light in the medium? m/s
- D) 2376 m/s During an Apollo moon landing, reflecting panels were placed on the moon. This allowed earth-based astronomers to shoot laser beams at the moon's surface to determine its distance. The reflected laser beam was observed 2.52 s after the laser pulse was sent. If the speed of light is 3.00x10 m/s, what was the distance between the astronomers and 10) the moon? A) 3.78x10 m B) 37800000 m 8.40x10 m D) 8.40x10 if you were the first Mars explorer and discovered that when you dropped a hammer if took 0.68 s to fall 0.90 m to the ground, what would you calculate for the gravitational acceleration on Mars? 11) A) 4.32x 10 m/sChapter 25: Problem 5: In the year 1178, five monks at Canterbury Cathedral in England observed what appeared to be an asteroid colliding with the moon, causing a red glow in and around it. It is hypothesized that this event created the crater Giordano Bruno, which is right on the edge of the area we can usually see from Earth. a) How long after the asteroid hit the Moon, which is 3.84 ×10⁵ km away, would the light first arrive on Earth in seconds?To the nearest hundredth of an hour, how many hours are required before a radio signal from a space probe near the planet Uranus reaches Earth, 1.607 *109 km away? A light ray is reflected from a mirror with an angle 15.2° to the normal. What was the angle of incidence? Light passes through a transparent substance at a speed of 2.256 ×108 m/s. Based on the following table, what is the material? index of refraction (n = =) Glass Diamond Substance Ice Water Ethyl alcohol (Click to select) ✓ (Click to select) Ice Diamond Glass Ethyl alcohol Water 1.50 2.42 1.31 1.33 1.36 The wavelength of a monochromatic light source is measured to be 5.06 x10-7 m in a diffraction experiment. (a) What is the frequency? x 1014 Hz (b) What is the energy of a photon of this light? 10-19 J
- Problem 13: A ray of light is incident on an air/water interface. The ray makes an angle of 01 = 22 degrees with respect to the normal of the surface. The index of the air is n = 1 while water is n₂ = 1.33. Part (b) Numerically, what is the angle in degrees? 0₂=1 Part (a) Choose an expression for the angle (relative to the normal to the surface) for the ray in the water, 02. Answer Saved Successfully! 8₂=asin (sin()) sin() cos() cotan() asin() atan() acotan() cosh() sinh() tanh() cotanh() Degrees O Radians Submit tan() acos() E 4 5 6 1 2 3 () Hint * Feedback 7 8 9 HOME 1 + 0 VO BACKSPACE DEL CLEAR - I give up! . ni END n2 0₁ 02₂ray of light strikes a flat block of glass at an incidence angle of ?1 = 38.6°. The glass is 2.00 cm thick and has an index of refraction that equals ng = 1.52. a.)What is the angle of refraction, ?2, that describes the light ray after it enters the glass from above? (Enter your answer in degrees to at least 2 decimal places.) b.) With what angle of incidence, ?3, does the ray approach the interface at the bottom of the glass? (Enter your answer in degrees to at least 2 decimal places.) c.) With what angle of refraction, ?4, does the ray emerge from the bottom of the glass? (Enter your answer in degrees to at least 1 decimal place.) d.) The distance d separates the twice-bent ray from the path it would have taken without the glass in the way. What is this distance (in cm)? e.) At what speed (in m/s) does the light travel within the glass? f.) How many nanoseconds does the light take to pass through the glass along the angled path shown here?