16 grams of radioactive material decays into 8 grams in 10
years. How long will it take to decay to 1 gram?
- 11 Answers
- 24805 Views
- Hexaware, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / pushpendra ahirwar
It's correct answer is 40 years.
16 gm to 8 gm in 10 years
8 gm to 4 gm in 10 years {again}
4 gm to 2 gm in 10 years
2 gm to 1 gm in 10 years
So, It will take {10+10+10+10=40} 40 years.
| Is This Answer Correct ? | 53 Yes | 16 No |
Answer / valarmathy
16 gm reduced to 8gm in 10yrs
so 8 gm get decayed
for decaying 1 gm it takes 10/8 yrs
for decaying 8 gm it takes 10/8*8
remaining 8 gm
need to decay 7 to get 1 gm remaining
for decaying 7 it takes
10/8*8*7
=10*7
=70 years
| Is This Answer Correct ? | 21 Yes | 4 No |
Answer / mayank chopra
It's correct answer is 40 years.
16 gm to 8 gm in 10 years
8 gm to 4 gm in 10 years {again}
4 gm to 2 gm in 10 years
2 gm to 1 gm in 10 years
So, It will take {10+10+10+10=40} 40 years.
| Is This Answer Correct ? | 12 Yes | 8 No |
Answer / kishan trambadiya
16 gms to 8 gms in 10 years
8 gms to 4 gms in 10 years {again}
4 gms to 2 gms in 10 years
2 gms to 1 gm in 10 years
So, It will take {10+10+10+10=40} 40 years
| Is This Answer Correct ? | 6 Yes | 4 No |
Answer / engr shahid
it will take 18 years 2 month and 15 days
16 gm to 8 gm in 10 years
8 gm to 4 gm in 5 years {again}
4 gm to 2 gm in 2.5 years
2 gm to 1 gm in 1.25 years
So, It will take (10+5+2.5+1.25)years.
| Is This Answer Correct ? | 3 Yes | 11 No |
Answer / sridhar
another 8yrs sufficient to decay it to almost 1 gm
| Is This Answer Correct ? | 1 Yes | 9 No |
Answer / gomathi
As 16 gram takes 10 years to decay into 8 grams it will
take another ten years to become 0 grams so to become one
gram it may 19 years..
| Is This Answer Correct ? | 2 Yes | 12 No |
Why series inductor and l-section filters cannot be used with half-wave rectifiers?
what is setup time and hold time ?
IMPORTANCE OF SCALING IN MOS TRANSISTORS
can i get all books inrpidshare
What is the use of radar?
i want do telecom protocol development course from hyderbad convergence training school so what is the scope after doing that course and will i get a good job after doing the course and what will be the minimum package
under which condition we shall prefer a shunt capacitor filter?
WHAT IS THE DIFFERENCE BETWEEN B.E AND B.Tech? which is the better one to choose according to you?
what is the difference betweeen FM and FSK modulation?
Why is it necessary to include voltage stabilizer in a power supply?
Which device produces voltage variable capacitor?
what is associate law?
-
Civil Engineering (5085) - Mechanical Engineering (4451)
- Electrical Engineering (16632)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
