Rank the following radiation particles according to their ability to penetrate solid objects, from the type of particle best able to penetrate to the particle least able to penetrate: alpha particle, beta particle, gamma.

alpha particle, beta particle, gamma

beta particle, gamma, alpha particle

gamma, beta particle, alpha particle

gamma, alpha particle, beta particle

Question

Rank the following radiation particles according to their ability to penetrate solid objects, from the type of particle best able to penetrate to the particle least able to penetrate: alpha particle, beta particle, gamma.

		
alpha particle, beta particle, gamma
 		
beta particle, gamma, alpha particle
 		
gamma, beta particle, alpha particle
 		
gamma, alpha particle, beta particle

anonymous · Answer

gama beta alpha

anonymous · Answer

A 10.0-gram sample of strontium-90 has a half-life of 29 years. How many half-lives will have passed before the sample is reduced to 2.50 grams?

it is 2?

anonymous · Answer

i think 1,5 half lives will pass

anonymous · Answer

1
 		
2
 		
14.5
 		
29
these are my choices.

anonymous · Answer

my error yes it is 2 sorry im looking at 3 questions at a time sorry again