Answer:
Explanation:
Given that,
Half life = 12years
How long does it take to decompose form 655ppbm to 10ppbm.
Rate of decay is given as
Q=Qo• exp(-λt)
at t=0 Qo=655
Then, Q=10
λ is decay rate and it is
λ= In2 / t½
λ= In2/12
λ=0.05776
Therefore,
Q=Qo• exp(-λt)
10=655exp(-0.05776t)
10/655=exp(-0.05776t)
0.01527=exp(-0.05776t)
Take In of both sides
In(0.01527)=-0.05776t
-4.182=-0.05776t
Then, t=-4.182/-0.05776
t=72.4years
Then the time to decay to 10ppbm is 72 years and 3 months
Or 72 years approximately
Answer:
0.25A
1.0A
2.5A
Explanation:
this is only for the calculated current column on edge
The answer is stomata. The process through which this occurs is known as transpiration.
Hope I helped :
Answer: Scientist don't know where energy comes from and how it was created but God created energy.
Explanation:
Answer:
Weight = 88N
Explanation:
Given the following data;
Acceleration due to gravity on moon = 1.6m/s²
Weight on earth = 539N
To find the weight on moon.
First of all, we would calculate the mass;
Weight = mass * acceleration due to gravity.
We know that acceleration due to gravity on earth is equal to 9.8m/s²
Substituting into the equation, we have;
539 = mass * 9.8
Mass = 539/9.8
Mass = 55 kg.
Now, we solve for the weight on moon.
Weight = 55 * 1.6
Weight = 88N