Author Question: When four hydrogen nuclei fuse to make helium, a small amount of matter is lost. What is the mass ... (Read 49 times)

savannahhooper

  • Hero Member
  • *****
  • Posts: 576
When four hydrogen nuclei fuse to make helium, a small amount of matter is lost. What is the mass difference and energy generated? The mass of hydrogen and helium nuclei are 1.67  1027 kg and 6.646  1027 kg, respectively.
 
  a. 0.034  1027 kg, 3  1012 J b. 0.022  1027 kg, 2  1012 J
  c. 0.068  1027 kg, 6  1012 J d. 0.011  1027 kg, 1  1012 J

Question 2

Classical Greek astronomers believed the motions of the heavens could be described by uniform circular motion.
 
  a. True
  b. False
  Indicate whether the statement is true or false



Viet Thy

  • Sr. Member
  • ****
  • Posts: 329
Answer to Question 1

a

Answer to Question 2

True



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

For a complete list of videos, visit our video library