This topic contains a solution. Click here to go to the answer

Author Question: Hydrogen must be raised to a high temperature before it will fuse. This is because A) fusion and ... (Read 97 times)

moongchi

  • Hero Member
  • *****
  • Posts: 516
Hydrogen must be raised to a high temperature before it will fuse. This is because
 
  A) fusion and all other forms of chemical combustion must be initiated by high temperatures.
  B) this reaction consumes more thermal energy than it produces.
  C) high temperatures are needed to overcome the strong nuclear force between hydrogen nuclei.
  D) this reaction must consume a large amount of thermal energy in order to produce nuclear energy.
  E) high temperatures are needed to overcome the electric repulsion between hydrogen nuclei.

Question 2

A 1-kg ball is thrown straight up at 10 m/s. Neglecting air resistance, the net force that acts on the ball when it is halfway to the top of its path is
 
  A) 1/2 N.
  B) 1 N.
  C) 5 N.
  D) 7.5 N.
  E) 10 N.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

stillxalice

  • Sr. Member
  • ****
  • Posts: 339
Answer to Question 1

E

Answer to Question 2

Answer: E




moongchi

  • Member
  • Posts: 516
Reply 2 on: Jul 29, 2018
Wow, this really help


tkempin

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Excellent

 

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

For a complete list of videos, visit our video library