4-When uranium undergoes fission, it releases an enormous amount of energy. That

Question

4-When uranium undergoes fission, it releases an enormous amount of energy. That energy was stored in the uranium nuclei as

a.kinetic energy in the nucleons.

b.electrostatic potential energy—from the electrostatic forces between nucleons.

c.gravitational potential energy—from the gravitational forces between nucleons.

d.nuclear potential energy—from the nuclear forces between nucleons.

5-In many circumstances it is very important to have control of a fission nuclear chain reaction with a moderator. moderator must therefore have a profound effect on the motion of

A) electrons.

B) protons.

C) neutrons.

D) photons.

6-A Radioactive isotope has 1/2 of the original material left after 10 minutes. Its half-life is

A) .5minutes

B) 10 minutes

C) 2 minutes

D) 2 seconds

7-A Radioactive isotope has 1/4 of the original material left after 20 minutes. Its half-life is

A). 5minutes

B) 10 minutes

C) 2 minutes

D) 2 seconds

8-A Radioactive isotope has 1/8 of the original material left after 30 minutes. Its half-life is

A). 5minutes            

B) 10 minutes

C) 2 minutes

D) 2 seconds

9-One way of making x-rays is to generate a high energy beam of , and then target a piece of metal such as tungsten with them. Identify what is used to bombard the metal target and generate x-rays.

A).electrons              

B) neutrons

C) protons              

D) photons

Explanation / Answer

4) d.nuclear potential energy—from the nuclear forces between nucleons.

5) C) neutrons.

6) B) 10 minutes

7) B) 10 minutes

8) B) 10 minutes

9) A).electrons

half-life time : the time taken to reduce the amount of sustance to half of the initial value.

Related Questions

Navigate

• Browse (All)
• Browse 4
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.