subject
Physics, 04.07.2019 14:30 LunaShiner

After two half-lives, how much original material from a sample remains? 25% or 50%

ansver
Answers: 1

Another question on Physics

question
Physics, 22.06.2019 03:10
Aphysical change is a change in the size, shape,, or stafe of matter true or false
Answers: 1
question
Physics, 22.06.2019 05:50
High schoolphysics 5+3 pts a neon light consists of a glass tube with metal wires at each end. when connected to a high-voltage source, the gas glows. if a fly lands on the glass tube, what will most likely happen? a) the fly will not feel a shock because the glass conducts any free electrons back into the gas. b) electrons will flow directly from the metal wires along the glass and shock the fly. c) the fly will not feel a shock because the glass insulates it from the electrons in the gas and the metal. d) electrons that are moving through the gas will be conducted through the glass and shock the fly.
Answers: 3
question
Physics, 22.06.2019 06:30
How much force was applied to an object if was moved 2 meters and the work done on the object was 8 joules? a. 0.25 n b. 4 n c. 6 n d. 16 n
Answers: 1
question
Physics, 22.06.2019 11:00
The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.
Answers: 3
You know the right answer?
After two half-lives, how much original material from a sample remains? 25% or 50%...
Questions
question
Geography, 14.07.2019 21:30