Chemistry, 10.02.2020 17:16 macylen3900

PLEASE ANSWER

Which of the following forms of electromagnetic waves is LEAST dangerous to the human body? Explain why.

A. X-rays because they are used at a hospital.
B. Microwaves because they have the longest wavelength.
C. Ultraviolet rays because they come from the sun.
D. Gamma rays because they have the shortest wavelength.

Answers: 2

Show answers

Answers

Answer from: macybarham

C. Microwaves.

Starting with the most obviously dangerous, gamma rays are the highest frequency and most energetic form of light. They penetrate the human body and cause radiation poisoning after nuclear events like melt downs. Very harmful.

X-Rays penetrate skin and muscle but not bones. They're useful for medical and dental imaging, but if they interact with your DNA, they can cause cancer. In fact, the first people to die because of X-rays were shoe salesmen. They used an x-ray device to scan people's feet and were overexposed to harmful x-rays.

UV rays can interact with your skin and your eyes. They cause you to tan, get a sunburn, or get skin cancer. Their wavelength allows them to penetrate the top layers of your skin, and if they interact with your skin cells, they can develop cancer.

Visible light is harmful to your eyes when bright enough, like staring at the sun or a high energy laser beam. Dark spots can be burned into your retinas, and you'd have those spots permanently.

Infrared light is heat, so you can be burned when close to fires or radiant heat sources.

Since we are mostly made of water, microwaves can harm us. Microwave ovens are made to be very safe, but when they were first developed, radiation leakage could be harmful. If there was a big enough microwave oven and you were inside it, it would be incredibly harmful!

It is not known if radio waves can be harmful. Our cell phones transmit in the radio/microwave part of the spectrum, and studies are being done to see if they have long term harmful effects.

So while all forms of electromagnetic waves can be harmful, the ones usually though of as harmful are Gamma rays, X-rays, and Ultraviolet light.

Answer from: Quest

c (diamond),

sio2 (quartz)

Answer from: Quest

A. it generates energy from carbohydrates.b. it requires activation by oxygen.c. it is used by cells to dispose of excess electrons

Another question on Chemistry

Chemistry, 22.06.2019 06:00

Oxidation-reduction reactions (often called "redox" for short) are reactions that involve the transfer of electrons from one species to another. oxidation states, or oxidation numbers, allow chemists to keep track of these electron transfers. in general, one element will lose electrons (oxidation), with the result that it will increase in oxidation number, and another element will gain electrons (reduction), thereby decreasing in oxidation number. the species that is oxidized is called the reducing agent or reductant. the species that is reduced is called the oxidizing agent or oxidant. to sum up: oxidation = increase in oxidation state = loss of electrons = reducing agent reduction = decrease in oxidation state = gain of electrons = oxidizing agent part a which element is oxidized in this reaction? fe2o3+3co→2fe+3co2 enter the elemental symbol. view available hint(s) is oxidized part b which element is reduced in this reaction? 2hcl+2kmno4+3h2c2o4→6co2+2mno2+2kcl+4h2o enter the elemental symbol. view available hint(s) is reduced

Answers: 1

Answer

Chemistry, 22.06.2019 07:30

Given that 1 mi = 1760 yd, determine what conver- sion factor is appropriate to convert 1849 yd to miles; to convert 2.781 mi to yards.

Answers: 2

Answer

Chemistry, 22.06.2019 11:10

Which of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal planar , bent , trigonal pyramidal , linear

Answers: 1

Answer

Chemistry, 22.06.2019 13:10

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

Answers: 1

Answer

You know the right answer?

PLEASE ANSWER

Which of the following forms of electromagnetic waves is LEAST dangerous t...

Questions