Why the statement The speed of light is 300 million ms is not always correct.?

Why the statement The speed of light is 300 million ms is not always correct.?
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When you have an interest in more signficant figures:299,792,456 m/s. It was measured in 1983 using wavelengths of acertain light from an atom, and that is what we got stuck with.When the light is less energetic than X-rays and is movingthrough something other than a hard vacuum.When you are accelerating significantly, you can get all sortsof funny values.When you measure the speed of light over a path involvingsignificant mass, you get a "path speed" of less than c even if itis through a vacuum. (Shapiro time delay.)Light travels through different types of matter at differentspeeds
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Why the statement The speed of light is 300 million ms is not always correct.?

Description : Why the statement The speed of light is 300 million ms is not always correct.?

Last Answer : When you have an interest in more signficant figures:299,792,456 m/s. It was measured in 1983 using wavelengths of acertain light from an atom, and that is what we got stuck with. ... if itis through a vacuum. (Shapiro time delay.)Light travels through different types of matter at differentspeeds

Why is the statement the speed of light is 300millon ms not always correct?

Description : Why is the statement the speed of light is 300millon ms not always correct?

Last Answer : You need to specify the medium. The speed of light IN A VACUUM is always exactly 299,792,458 meters per second - FOR ANY OBSERVER. The speed of light in water, air, glass, etc. is usually less than that.

The round-trip propagation delay between two earth stations through a geosynchronous satellite is A. 500 to 600 ms B. 300 to 400 ms C. 600 to 700 ms D. 400 to 500 ms

Description : The round-trip propagation delay between two earth stations through a geosynchronous satellite is A. 500 to 600 ms B. 300 to 400 ms C. 600 to 700 ms D. 400 to 500 ms

Last Answer : A. 500 to 600 ms

The maximum propagation delay of a geostationary satellite is A. 278 ms B. 239 ms C. 300 ms D. 250 ms

Description : The maximum propagation delay of a geostationary satellite is A. 278 ms B. 239 ms C. 300 ms D. 250 ms

Last Answer : A. 278 ms

What is the minimum propagation delay of a geostationary satellite? A. 278 ms B. 239 ms C. 300 ms D. 600 ms

Description : What is the minimum propagation delay of a geostationary satellite? A. 278 ms B. 239 ms C. 300 ms D. 600 ms

Last Answer : B. 239 ms

2. Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 x 108 ms-1. -Physics-10

Description : 2. Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 x 108 ms-1. -Physics-10

Last Answer : Refractive index of a medium (nm) = Speed of light in vacuum/Speed of light in the medium Speed of light in vacuum (c) = 3 × 108 m/s Refractive index of glass (ng) = 1.50 Speed of light in the ... Speed of light in vacuum/ Refractive index of glass = c/ng =3 × 108/1.50 = 2x 108 ms-1.

300 million tons of plastic are thrown out annually. What are you doing about? How can you help?

Description : 300 million tons of plastic are thrown out annually. What are you doing about? How can you help?

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If you won 300 million forints, would you leave your job there?

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HUF 300 million

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What is 2 trillion dollars divided by 300 million people?

Description : What is 2 trillion dollars divided by 300 million people?

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Description : The time taken by Sun to revolve around the center of our galaxy is------? A. 150 million years B. 250 million years (Answer) C. 300 millon years D. 350 millon years

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Worldwide, about ____ million people are hungry. a. 300 c. 800 b. 500 d. 200

Description : Worldwide, about ____ million people are hungry. a. 300 c. 800 b. 500 d. 200

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The distance from the Earth to the Sun is about 100 million miles. The speed of light is 186,000 miles per second, and light takes eight minutes to reach the Earth from the Sun. Let's say the Sun rose at 6am this morning, and that by some freak of physics the speed of light is suddenly doubled to 372,000 miles a second.What time will the Sun rise tomorrow? -Riddles

Description : The distance from the Earth to the Sun is about 100 million miles. The speed of light is 186,000 miles per second, and light takes eight minutes to reach the Earth from the Sun. Let's say the ... of light is suddenly doubled to 372,000 miles a second.What time will the Sun rise tomorrow? -Riddles

Last Answer : 6am again. After all, what diffrence does the speed of light make to the answer? It's irrelevant- only the speed of the roation of the Earth matters here.

Why don't they change the size of a meter so that the speed of light is exactly 300,000 km/sec?

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Last Answer : I could ask the same about why don’t they change a foot to ten inches and a yard to ten feet, so all I have to do is move a decimal to figure out measurements. I’d like them to make ten ounces in a cup and a pound while they are at it. It is what it is.

The speed of light is a. 186,000 mi/h b. 300 mi/h c. 300,000 m/s d. 300,000,000 m/s

Description : The speed of light is a. 186,000 mi/h b. 300 mi/h c. 300,000 m/s d. 300,000,000 m/s

Last Answer : d. 300,000,000 m/s

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Description : The speed of light is -----? A. 280,000 km/s B. 300,000 km/s (Answer) C. 320,000 km/s D. none of these

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Description : The speed of light is ∙ a. 186,000 mi/h ∙ b. 300 mi/h ∙ c. 300,000 m/s ∙ d. 300,000,000 m/s

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Description : Pick out the correct statement. (A) Fanning friction factor is inversely proportional to Reynolds number always (B) The property of a randomly packed bed (with raschig rings) is given by the ratio of the ... the ratio of the speed of the fluid to that of sound in the fluid under conditions of flow

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Description : Pick up the correct statement from the following (A) 1 second of arc corresponds to a displacement ratio of 1:206, 300 (B) 1 degree of arc corresponds to a displacement ratio of 1:57 (C) ... to propagate themselves along a traverse as the square root of the number of stations (D) All the above

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Description : Pick up the correct statement from the following: (A) The plywoods do not split or crack due to changes in atmosphere (B) The commercial plywoods are available upto 150 cm wide and upto 300 cm long (C) The plywoods possess uniform tensile strength in all directions (D) All the above

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Statistics , Problems with Two Projectors ? From the top of a 100 meter high tower an object is thrown at a 30 ° angle with a horizontal speed of 50 ms . At the same time another object from the base of the tower was thrown at an angle of 45 সাথে with the same velocity horizontally . At what time and at what height will the two objects meet ?

Description : Statistics , Problems with Two Projectors ? From the top of a 100 meter high tower an object is thrown at a 30 ° angle with a horizontal speed of 50 ms . At the same time another object from ... সাথে with the same velocity horizontally . At what time and at what height will the two objects meet ?

Last Answer : answer:

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Description : What is the speed of an object that is dropped off a cliff after 5 seconds and no air resistance with an initial speed of 0 ms?

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What is the total momentum of the system before collision If two 0.5 kg balls approach each other with the same speed of 1.0 ms?

Description : What is the total momentum of the system before collision If two 0.5 kg balls approach each other with the same speed of 1.0 ms?

Last Answer : Momentum is mass times velocity. But in this case, you don'teven need to calculate that: If I understand correctly, the ballshave the same mass, the same speed, and they move exactly inopposite directions - so ... other words, if oneball has a momentum of +M, the other one will have a momentum of-M.

The supervisor Speed post centre will send his daily report to Manager speed post a) By means of a letter b) By fax message c) By email d) By using format MS 83

Description : The supervisor Speed post centre will send his daily report to Manager speed post a) By means of a letter b) By fax message c) By email d) By using format MS 83

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Description : An α particle moves perpendicular to a constant magnetic field of strength 1.2 T in a circular path of radius 0.7 m. The speed of α particle in ms-1 is ______________ a) 2.7 × 107 b) 2.6 × 107 c) 3.2 × 107 d) 2.0 × 107

Last Answer : a) 2.7 × 107

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Description : The frequency of a wave travelling at a speed of 500 ms-1 is 25 Hz. Its time period will be ______. (i) 20 s (ii) 0.05 s (iii) 25 s (iv) 0.04 s

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The velocity of light in glass is `2 xx 10^(8)ms^(-1)` while that in vaccum is `3 xx 10^(8)ms^(-1)`. By how much would an ink dot appeat to be raised

Description : The velocity of light in glass is `2 xx 10^(8)ms^(-1)` while that in vaccum is `3 xx 10^(8)ms^(-1)`. By how much would an ink dot appeat to be raised

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Description : The velocity of light in vacuum is : (1) 3 * 108 ms-1 (2) 2 * 108 ms-1 (3) 3 * 107 ms-1 (4) 3 * 106 ms-1

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Haulage and weighment statement. will be submit on or before the ______in each year, the ______should submit a statement [MS.60(a)] to the ______showing the regular accommodation provided on each railway in his division on the_______, respectively a) 1st February and 1st August, Postmaster, Head of the Circle, 21st Jan and 21st Jul b) 1st February and 1st August, Postmaster Supdt of post office, 21st Jan and 21st Jul c) 1st February and 1st August, Superintendent, Head of the Circle, 21st Jan and 21st Jul d) None of these

Description : Haulage and weighment statement. will be submit on or before the ______in each year, the ______should submit a statement [MS.60(a)] to the ______showing the regular accommodation provided on each railway in ... 1st August, Superintendent, Head of the Circle, 21st Jan and 21st Jul d) None of these

Last Answer : c) 1st February and 1st August, Superintendent, Head of the Circle, 21st Jan and 21st Jul

The first scientific reference to these objects was a 1611 treatise by Johannes Kepler titled A New Year’s Gift or On the Six-Cornered ____. It would be 300 years before his question (of why they always exhibit a six- fold symmetry) could finally be answ

Description : The first scientific reference to these objects was a 1611 treatise by Johannes Kepler titled A New Year’s Gift or On the Six-Cornered ____. It would be 300 years before his question (of why they always exhibit a six- fold symmetry) could finally be answ

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A computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as A) Super computer B) Mini computer C) Micro computer D) Macro computer

Description : A computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as A) Super computer B) Mini computer C) Micro computer D) Macro computer

Last Answer : Answer : A

a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Description : a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Last Answer : Super computer

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Description : a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Last Answer : Super computer

How many speed of 8088,8085,8086 microprocessor: a. 2.5 Million instruction per second b. 1.5 Million instruction per second c. 3.5 Million instruction per second d. 1.6 Million instruction per second

Description : How many speed of 8088,8085,8086 microprocessor: a. 2.5 Million instruction per second b. 1.5 Million instruction per second c. 3.5 Million instruction per second d. 1.6 Million instruction per second

Last Answer : a. 2.5 Million instruction per second

a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Description : a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Last Answer : a. Super computer

a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Description : a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Last Answer : a. Super computer