Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in: A. 4.2 seconds B. 42 seconds C. 4.2 years D. 42 years

Q: Calculate the frequency of yellow light with a wavelength of 580 x 10-9 m.

A:

Q: Light From a camera flash weakens with distance in accord with the inverse-square law. Comment on an…

A: Given:  camera flash

Q: 2. Copy into your notebooks the energy wave found in the “General Properties of Light' section.…

A: Light is a form of radiation, which can be defined as energy that travels in the form of…

Q: Traveling in space, microwave light has a longer wavelength than green light. Using that fact,…

A: Given wavelength of microwave is greater than wavelength of green light

Q: 25. The farthest objects in our universe are quasars. What is the distance of a quasar from which…

A:

Q: 3. A light year is a unit that measures- A. Time B. Size C. Distance D. Temperature O A O B O c

A:

Q: Red light and blue light move through space. Red light has a wavelength of 700 nm; blue light has a…

A: Given data:  Red and blue light travels through space  Wavelength of Red light = 700 nm Wavelength…

Q: The speed of light is 3 x 108ms-1. Violet light has a wavelength of about 4 x 10-7m. Calculate the…

A: Given  Speed of light v=3×108m/s Wavelength λ=4×10-7m

Q: Red light and blue light move through space. Red light has a wavelength of 700 nm; blue light has a…

A: Red colour and blue colour light with 700nm and 400nm respectively.

Q: 3. Paul knew from his studies that the distance from the Earth to the outer reaches of the Solar…

A:

Q: A star is moving towards us at an extremely fast speed. What is likely happening to the light wave…

A: Doppler effect: The wavelength or frequency of radiation from a source appears to change due to its…

Q: Light takes about 2.6 seconds to travel to the moon and back from earth. How far away is the moon?

A: Given  time taken by the light to travel the distance from earth to moon and back =2.6 sec so time…

Q: Calculate the frequency and energy of blue light that has a wavelength of 400nm.

A: Given that :- Wavelength λ = 400 nm Thus we can find frequency ν of the blue light as below-…

Q: The Flash, A fictional hero originated from DC Comics, can travel up to 95 percent of the speed  of…

A: Given(s): Velocity, v=95% of c=0.95c Actual time, t=20 min. Require: Apparent time, t'=?

Q: A airplane approaches at an altitude of 10 km flying at 600 km/hr.   1. If the air temperature at…

A:

Q: A planet is about 2.3x1011 m away from the Earth. The time for a radio signal to travel from the…

A:

Q: Find the approximate temperature of a red star that emits light with a wavelength of maximum…

A: Wien's displacement law states that T = (2.9 × 10-3)/λmaximum where T is the temperature of the…

Q: What is the value for the constant for the speed of light

A:

Q: If the speed of light is given as 299.792,458 meters per second and the wavelength is 481 nm. what…

A: Formula of frequency is as follows; f=vλ…

Q: 3. Explain the difference in time taken for light and sound to travel the same distance. Key words -…

A: Given data- speed of sound in air Vsound=343 m/s speed of light Vlight=3 × 108 m/s both are traveled…

Q: A light-year is a measure of the astronomical distance that light traverses in a vacuum in 1 year.…

A: Kilometre that light travels in 1 ly is equal to    1 ly = 3*10^5 * 365*24*3600 1 ly = 9.4608*10^12…

Q: Due to the Doppler effect, a moving aircraft sees the broadcast signals at 376 MHz from a stationary…

A: Given information: Here, f’ and f are the observed and the actual frequency respectively and v is…

Q: Light passes from material A into material B. The angle that the light makes with the normal in…

A: The angle of incidence, that is the angle made by the light with the normal in medium A = iThe angle…

Q: A Whirlpool Microwave oven uses light with a wavelength of 86.98 cm to cook your food. What is the…

A: Given data:  Wavelength (λ) = 86.98 cm = 0.8698 m 1 GHz = 1×109 Hz Frequency (υ) =?

Q: 1. What is light?

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: The velocity of light in a medium is 76954.90277 miles per second. What is the medium?

A: Solution: Given that The velocity of light in a medium is 76954.90277 miles per second. find the…

Q: Light does bend in a gravitational field. Why is this bending not taken into consideration by…

A: Light bends in gravitational field .But the gravitational field should be strong enough to notice…

Q: The German-born, American physicist Albert Michelson devoted much of his life to the accurate…

A: Given: distance, d = 35 km speed, v = 299774 km/s

Q: 2. Calculate travel time of light from the Moon to the Earth (the speed of light in vacuum is 3x10…

A:

Q: Hello. this question is regarding the speed of light  quick thought experiment:  you have a rod that…

A: Solution: Given: Is it possible to transmit a signal, faster than light, using a very long rigid rod…

Q: In 2020, a 35-year-old astronaut left Earth to explore the galaxy; her spaceship travels at 2.5 x 10…

A: Speed of spaceship= 2.5*108 m/s

Q: "Light years" is the unit of _____?   A) Acceleration B) Distance C) Light Intensity D) Weight

A: Find:- light-year is a unit of?

Q: In 1676, the Danish astronomer Ole Roemer had one of those “aha” moments in science. He concluded…

A: The speed of light based on Roemer’s is

Q: Distances in space are often quoted in units of light years, the distance light travels in one year.…

A: Given data The distance is d=12.0×109 light years One light-year is the distance taken by the light…

Q: 3- a)   The distance to Alpha Centauri (the nearest large star to Earth) is 4.37 Ly (Light Years).…

A: The distance to Alpha Centauri is D = 4.37 Ly. The value of 1 Ly = 5.88 x 1012 miles.

Q: Choose one light phenomena and explain why this happens

A: There are many light phenomena such as reflection of light, refraction, diffraction, interference,…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.