1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Darina [25.2K]
2 years ago
13

If we start with 1.000 g of cobalt-60, 0.675 g will remain after 3.00 yr. this means that the of is _____

Physics
1 answer:
Tju [1.3M]2 years ago
8 0
<span>Cobalt-60 is undergoing a radioactivity decay.

The formula of the decay is n=N(1/2)</span>∧(T/t).
<span>Where N </span>⇒ original mass of cobalt
<span>           n </span>⇒ remaining mass of cobalt after 3 years
          T ⇒ decaying period
           t ⇒ half-life of cobalt.

So,
0.675 = 1 × 0.5∧(3/t)
log 0.675 = log 0.5∧(3/t)
3/t = log 0.675 ÷log 0.5
 3/t= 0.567

t = 3÷0.567
  = 5.290626524

the half-life of Cobalt-60 is 5.29 years. 

<span>           
</span><span>
</span>
You might be interested in
During the internal examination, the pathologist drains the intestines, removes any undigested food and feces,and examines the c
DanielleElmas [232]
During the internal examination, the pathologist drains the intestines, removes any undigested food and feces, and examines the contents of the stomach. This examination could give the pathologist clues of the time of death, and the location of death.  The process of digesting and defecation vary from person to person, the entire process is generally considered to take approximately 40 hours in adults
8 0
3 years ago
6. One minute after takeoff, a rocket carrying the space shuttle into outer space reaches a speed of 447 m/s.
Sidana [21]

Answer:

acceleration of the rocket is given as

a = 7.45 m/s^2

Explanation:

As we know that rocket starts from rest and then reach to final speed of 447 m/s after t = 1 min

so we have

v_i = 0

v_f = 447 m/s

t = 1 min = 60 s

so we have

a = \frac{v_f - v_i}{t}

a = \frac{447 - 0}{60}

a = 7.45 m/s^2

7 0
2 years ago
if a piece of sea floor has moved 50 km in 5 million years what is the yearly rate of sea-floor motion?
BartSMP [9]
<span>0.0001 km / year or 10^-5 km/year just take 50 km and divide it by 5 million</span>
6 0
3 years ago
Read 2 more answers
How much time does it take to roll a ball 2 meters on a steep slope
11111nata11111 [884]

Answer:

asdadsadada

Explanation:

8 0
3 years ago
Velocity hdjsksskskskdldlddld​
Nostrana [21]

Answer:

Vro....... really vro?

4 0
3 years ago
Other questions:
  • A boat is moving at a rate of 15.0 meters per second. Its speed is then decreased uniformly to 3.0 meters per second. It takes 4
    14·1 answer
  • Boston Red Sox pitcher Roger Clemens could routinely throw a fastball at a horizontal
    13·1 answer
  • A gadget of mass 21.85 kg floats in space without motion. Because of some internal malfunction, the gadget violently breaks up i
    15·1 answer
  • ln the constellation of Orion, you can see a group of stars and other objects that appear in the shape of a sword. Ln the middle
    5·1 answer
  • When a particle vibrates and passes to the next vibration what happens?
    7·1 answer
  • You drop a rock down a well that is 11.5 m deep.How long does it take the rock to hit the bottom of the well ?
    9·1 answer
  • How do furnace heating systems typically work?
    14·1 answer
  • (6.MS-ETS2-1(MA).) The electrons in __________ move about more freely than the electrons in insulators which is why this type of
    8·1 answer
  • What is the only part in our body we do not stretch?
    11·2 answers
  • A snail con move at 3cm/s if it’s ke is 300joules what it it’s mass?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!