true or false Ultraviolet radiation is harmful with no benefits

Q: What are some examples of fluorescent light and incandescent light?

A: Fluorescent lights are gas filled tubes (tube lights). The gas gets excited by electric pulses and…

Q: Determine the mass of a ball with a velocity of 20.0 m/s and a wavelength of 8.92 × 10-34 m.

A:

Q: Be sure to answer all parts. How fast must a 143.7-g baseball travel in order to have a de Broglie…

A: De Broglie's equation: λ=h/mv Here h=planks constant m=mass of the object v =velocity   89 x10-12…

Q: A wave has a frequency of 5041.28 Hz and a wavelength of 6.51 m. What is the speed of the wave? m/s

A: in the given question ,v= frequency of wave= 5041.28 Hz or s-1ʎ=wavelength of wave =6.51m the speed…

Q: Calculate the frequency of an X-Ray given that the wavelength is 5.0 nanometers. (Hint: 1 meter =…

A: Given, Wavelength = 5.0nm.

Q: A local AM radio station broadcasts at a frequency of 693 KHz. Calculate the energy of the…

A:

Q: Consider x-ray radiation with a frequency of 4.09  1016 Hz. How many photons are contained in a…

A: The relation between energy and frequency is given by

Q: When you double the frequency of electromagnetic radiation, you _________ the energy.

A: Electromagnetic radiation is that energy which travels with speed of light through electric and…

Q: What is the energy of a Photon of radiation with frequency of 1X 1010S-1? A) 3X 1090 J 3.) IX 1045J…

A: Energy of photon can be calculated using Planck’s equation, E = hv E is the energy h is the Planck's…

Q: What if it fell to ground state level? Would n=2?

A:

Q: What is the frequency of a photon if the energy is 7.21 x 10-¹⁹ J? (h= 6.626 x 10-34 J·s)

A: Frequency is directly proportional to energy

Q: Radio communications travel at the speed of light (2.9979×10⁸ meters/sec). How long will it take for…

A: Given : Speed of radio communications = 2.9979 X 108 m/s And distance between the space probe and…

Q: Which of the following types of EM radiation have photons with the highest velocity in a vacuum?…

A: From the given types of electromagnetic radiation, which has highest velocity in a vacuum has to be…

Q: A local FM radio station broadcasts at an energy of 6.35×10-29 kJ/photon. Calculate the frequency…

A: To find the value of frequency.

Q: Rank the following lights in order of increasing wavelength starting with the smallest wavelength…

A: As we Know, E = hv = hc / λWhere λ is wavelength, v is frequency, c= speed of light, h = Planck…

Q: 10. An FM radio station broadcasts at a frequency of 102.7 MHz. What is the wavelength of the radio…

A: Wavelength is given by  Wavelength = speed of light / frequency   Speed of light = 3×108 m/s

Q: Arrange the following in order of decreasing wavelengths  microwave, x-rays, radio waves

A: All these radiations are considered as Electromagnetic Radiations. We can arrange the given…

Q: How many kJ (kilojoules) would be in 2.00 moles of green light (λ = 550 nm) photons?

A:

Q: Which of the following wavelengths has the lowest frequency? 470 nm 440 nm all wavelengths have the…

A: We know, c=λνwhere,c= speed of lightλ=wavelengthν=frequency

Q: Multiple choice  The relationship between wavelength and frequency is: 1- wavelength is double…

A: The correct option is as follows:

Q: Be sure to answer all parts. How fast must a 142.7–g baseball travel in order to have a de Broglie…

A: The de Broglie hypothesis: De Broglie proposed that just as light has both wave-like and…

Q: What is the wavelength, in nanometers, of radiation whose frequency is 2.5 x 108 s-1?

A: The formula which connects wavelength and frequency is, C = f λ where, C= speed of light = 3 ×108…

Q: The effect of an energetic radiation on a human being depends: A.) Of the exposure time. B.) From…

A: A Photon is a quantum of electro magnetic radiation. The energy of photon depends on its frequency…

Q: If you have a 100 Watt lamp, about how many photons are emitted per second, assuming the majority of…

A:

Q: The spacecraft caught up to the comet when it was 500 million kilometers from Earth. The spacecraft…

A:

Q: Question 21 of 50 Submit Which is the correct sequence for these types of radiation in order of…

A: In the above question,  the electromagnetic spectrum is given with broad range of wavelength and…

Q: Lowest frequency Highest energy Highest frequency Lowest energy Answer Bank Answer Bank microwaves…

A:

Q: None

A: Step 1: from the graph we can say that there is a good spectral line at above 430 nm .and there is…

Q: QUESTION 21 A protein sample absorbs 50% of photons when the concentration is 0.2 M. The % of…

A: Given data : Protein absorb 50% photons when concentration is 0.2M When concentration is 0.4M then…

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.