Light changes its energy when it “falls” in a gravitational field. This change in energy is not evidenced by a change in speed, however. What is the evidence for this change in energy?

Q: 7.39 At its closest approach, Mercury is 77.3 million km from Earth. How long would it take to send…

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Q: A microwave oven uses EM radiation of wavelength 0.13 m. Calculate the frequency of this radiation.…

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Q: see a bolt of lightening and 4 seconds later we hear the thunderclap. if the speed in the air is…

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Q: P = mgh for h ( potential energy = mass times gravity times height)

A: Potential energy is the energy possessed by an object due to its position or due to its state.…

Q: Sound waves are produced by O vibrating objects O radio stations soft objects O objects under…

A: When an object vibrates about its position this vibration creates pressure wave. This pressure wave…

Q: Our nearest star (other than the Sun) is 4.2 light-years away. That is, it takes 4.2 years for the…

A: One light year is the distance the light will travel in a time of one year. The distance can be…

Q: Hertz is a measure of O time period O radio waves O wavelength O frequency

A: about frequency

Q: A tennis ball bounces on the floor three times. If each time it loses 22.0% of its energy due to…

A: Given Loss in energy after each bounce = 22% Initial height = 2.3 m Required Final height

Q: Sound waves used in ultrasonic imaging have frequencies in the kilohertz range

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Q: When a light beam approaches you, its frequency is higher, and its wavelength is shorter. Does this…

A: SOlution: When a light beam approaches you, its frequency is higher, and its wavelength is shorter.…

Q: When a flashing light source approaches you, does the speed of light or the frequency of light—or…

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Q: If the speed of light is still faster than sound but not constant, what will happen to reality?

A: if speed of light is still faster than sound but not constant, (it means the speed of light changes…

Q: A baseball fan sitting in the "cheap seats" is  d = 136 m  from home plate (see the figure below).…

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Q: A jet plane flies at an altitude of 2,000 meters. An observer on the ground notes that he hears the…

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Q: A 10 kilogram object falls from a cliff 100 meters high. What will be the total energy at the…

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Q: Light travels in __________   a. one direction b. two directions c. three directions d. four…

A: Light travel in a straight line. Travel in one direction. Option a is correct.

Q: Microwaves are part of the electromagnetic spectrum and travel with a speed of 3.00 x 108 m/s, also…

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Q: When compared to the speed of light, sound waves travel

A: When compared to the speed of light, sound waves travel slower

Q: Do radio waves travel at the speed of sound, or at the speed of light, or somewhere in between?

A: Radio waves are electromagnetic radiation and travel very quickly through space.

Q: In 2004, when Mercury passed between the Sun and Earth, sunlight was not appreciably bent as it…

A: Mercury ids the closest planet to the Sun in our solar system.

Q: A Whirlpool Microwave oven uses light with a wavelength of 0.85 m to cook your food. What is the…

A: 1. As per the given condition, the wavelength of light used in the microwave is 0.85 m  λ= 0.85 mand…

Q: Hoover Dam Bridge over the Colorado River at a height of 271 m. If a heavy object is dropped from…

A: Introduction:Here, the objects free-fall due to gravity, and the initial speed of the object is…

Q: Approximately how long would it take a telephone signal to travel 5.46 x 10^10 m from Earth to Mars…

A: A telephone signal is transmitted from one place to the other place with the help of an…

Q: The speed of light (=5.09 x 104 Hz) in glycerol is 1. 1.70 x 10° m/s 2. 2.04 x 10 m/s 3. 3.00 x 10…

A: Refractive index: The refractive index of the medium is defined as the ratio of the speed of light…

Q: lbert Einstein completed his theory of relativity and stated the law of mass-energy conservatio

A: Relativity is a theorem, formulated by Albert Einstein, which states that space and time are…

Q: Particles with mass are prevented from moving at the speed of light by the contraction of their…

A: An object with finite rest mass can never reach speed of light. Photons which move at speed of light…

Q: what is the light wavelength traveling at the speed of light with a frequency of 0. 7/8 HZ

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Q: 0.98

A: When the light passes from a rarer medium(air) to a denser medium(glass) then the speed of light is…

Q: The speed of light is 3 x 10^8 m/s. What is the wavelength of a Light Wave with a frequency of 1.5 x…

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Q: As frequency increases, what happens to the energy of light?

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Q: A light wave from a star has a frequency or 6.67 x 1014 Hz and a wavelength of 4.50 x 10-7 m. The…

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Q: A E D F Compare A and D for brightness A. A>D B. A<D C. A=D

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Q: An observer watching sailing ship at sea notes that the ship appears to be sinking as it moves…

A: This observation best explain with :    As ship is moving away from observer it appears to sink is…

Q: Define the term, the conservation of virtual energy?

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Q: What is energy healing?

A: ENERGY HEALING Energy healing is a treatment process which is used as complementary and alternative…

Q: The sun is almost 400 times farther from Earth than is the moon. How long does light from the moon…

A: Given:Speed of the light = 3 X 108 m/sDistance between the moon and the earth = Distance between the…

Q: Which of the following is true about light?

A: Light acts as a particle and wave at the same time. In quantum mechanics, wave and particle has dual…

Q: The Doppler effect is observed when the source of the sound is moving ____ than the speed of the…

A: Doppler effect is the change in frequency of a wave in relation to an observer who is moving…