« previous next »

Author Question: Radio waves are diffracted by large objects such as buildings, whereas light is not noticeably ... (Read 75 times)

cookcarl

  • Hero Member
  • *****
  • Posts: 539
on: Jul 29, 2018
Radio waves are diffracted by large objects such as buildings, whereas light is not noticeably diffracted. Why is this?
 
  A) Radio waves are unpolarized, whereas light is normally polarized.
  B) The wavelength of light is much smaller than the wavelength of radio waves.
  C) The wavelength of light is much greater than the wavelength of radio waves.
  D) Radio waves are coherent and light is usually not coherent.
  E) Radio waves are polarized, whereas light is usually unpolarized.

Question 2

If an atom has 104 electrons, 157 neutrons, and 104 protons, what is its approximate atomic mass?
 
  A) The approximate atomic mass is 365.
  B) The approximate atomic mass is 261.
  C) The approximate atomic mass is 157.
  D) The approximate atomic mass is cannot be determined with the information given.


l.stuut

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

Answer: B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Large numbers of plant species can flower at once in this grassland in Kinsella, Alberta. Large numbers of plant species can flower at once in this grassland in Kinsella, Alberta.
Vertical structuring of the oceans is associated with substantial variation in light and temperature Vertical structuring of the oceans is associated with substantial variation in light and temperature
Jugular Venous Pulse Waves in Relation to the Phonocardiogram and Electrocardiogram Jugular Venous Pulse Waves in Relation to the Phonocardiogram and Electrocardiogram
Lung cancer. Photograph of part of a lung removed after death. The yellow area is a large tumor and Lung cancer. Photograph of part of a lung removed after death. The yellow area is a large tumor and
Energetics of the two-photosystem light reactions Energetics of the two-photosystem light reactions
Light Blue Eye Color Light Blue Eye Color
Video: Carbohydrate Metabolism: Introduction to renal processes and filtrate formation and composition

For a complete list of videos, visit our video library