Problem: The particle emitted by uranium -238 nucleus contains two protons and two neutrons
Possible answers?
a. has electronmagnetic field
b. has a negative charge
c. can by stopped by a piece of paper
d. are the most penetrating of all radioactive decay
2007-01-01 17:43:44 · 5 answers · asked by Melody 1 in Science & Mathematics ➔ Physics
Answer is (a) and (c). It is alpha particle and have charge +2. It can be stopped by a piece of paper. Gamma ray has the greatest penetrating power, which the penetrating power decrease as : gamma ray > beta particle > alpha particle.
Gamma ray can only be stopped by lead block or metres of concrete.
Gamma ray is one of the electromagnetic wave.
2007-01-01 18:22:51 · answer #1 · answered by li mei 3 · 0⤊ 0⤋
answer c.
Also the most destructive of the types of radiation when ingested into the body.
Also present in depleted uranium weapons currently in use in Iraq
Present in the dust that covers everything in the area when the uranium projectile is incinerated.
This dust is very fine and can easily be picked up and spread by the wind, animals and humans.
Our Troops are working in a contaminated environment every day, unprotected and unaware.
BRING ALL OF OUR TROOPS HOME NOW!!!
2007-01-02 02:35:54 · answer #2 · answered by Jack C 3 · 0⤊ 0⤋
a,c are correct;
a, because the particle is a moving alpha particle (a.k.a. Helium nucleus) which is a current of positive electric charge, and
c, as revealed by experiment.
b and d are false.
2007-01-02 03:13:26 · answer #3 · answered by Epicurus 2 · 0⤊ 0⤋
It is known as an alpha partical and c.) can be stopped by a piece of paper.
2007-01-02 01:56:16 · answer #4 · answered by Anonymous · 0⤊ 0⤋
that would bee
C
2007-01-02 02:04:30 · answer #5 · answered by yuri 2 · 0⤊ 0⤋