« previous next »

Author Question: Which of the following sources of radiation provides most of our yearly exposure? A) background ... (Read 85 times)

cnetterville

  • Hero Member
  • *****
  • Posts: 547
on: Aug 27, 2018
Which of the following sources of radiation provides most of our yearly exposure?
 
  A) background radiation
  B) smoke detectors
  C) living near nuclear power plants
  D) televisions (cathode ray tubes)
  E) dental and medical X-rays

Question 2

If the heat of melting of a sample is 135 J/g, how much heat would be required to melt 5.00 grams of material?
 
  A) 675 J
  B) 27 J
  C) 67 J
  D) 270 J
  E) none of the above


Joy Chen

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Aug 27, 2018
Answer to Question 1

A

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

The four ways in which animals exchange heat with the environment are radiation, evaporation, convec The four ways in which animals exchange heat with the environment are radiation, evaporation, convec
Tactile communication among honeybees regarding food sources. Tactile communication among honeybees regarding food sources.
Electromagnetic Radiation Electromagnetic Radiation
Nonpoint Sources of Pollution Nonpoint Sources of Pollution
Deforestation is one of the main sources of greenhouse gas emissions Deforestation is one of the main sources of greenhouse gas emissions
Induction of a thymine dimer by UV radiation, leading to distortion of the DNA Induction of a thymine dimer by UV radiation, leading to distortion of the DNA
Video: Stomach peristalsis - Movement of Food Through the Small Intestine

For a complete list of videos, visit our video library