This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The two nuclei that can sustain a nuclear chain-reaction are A) thorium and plutonium. B) 238U ... (Read 82 times)

fbq8i

  • Hero Member
  • *****
  • Posts: 527
on: Jul 29, 2018
The two nuclei that can sustain a nuclear chain-reaction are
 
  A) thorium and plutonium.
  B) 238U and plutonium.
  C) thorium and 235U.
  D) 235U and plutonium.
  E) Actually, there is only one nucleus that can sustain a nuclear chain-reaction.

Question 2

Can an object have mechanical energy without having momentum? Can an object have momentum without having mechanical energy? Explain.
 
  What will be an ideal response?

Question 3

Give two explanations of why a cannonball fired from a long-barrel cannon will have a greater velocity than from a shorter cannon.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

rnehls

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

wohoo thank youuu.

Answer to Question 3

Answer: In terms of impulse-momentum, the longer barrel means the time during which the exploding powder pushes on the cannonball is longer. This means more impulse, which in turn means more gain in momentum, and greater velocity. In terms of work-energy, the longer barrel means a longer distance for the force to act, which means greater work on the ball inside the barrel and more gain in kinetic energy, and greater velocity.


fbq8i

  • Member
  • Posts: 527
Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

kalskdjl1212

  • Member
  • Posts: 353
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Diagram of the food chain Diagram of the food chain
Chain of Infection Chain of Infection
Reaction 4: Cleavage to Two Triose Phosphates Reaction 4: Cleavage to Two Triose Phosphates
Reaction 7: The First Substrate-Level Phosphorylation Reaction 7: The First Substrate-Level Phosphorylation
Nuclear energy Nuclear energy
0.300 moles of sodium nitrite are needed for a reaction. The solution is 0.450 M. How many mL ... 0.300 moles of sodium nitrite are needed for a reaction. The solution is 0.450 M. How many mL ...
Video: Acid-base imbalances - compensation of respiratory acidosis and alkalosis

For a complete list of videos, visit our video library