How do we calculate the value of work?
2 answers:
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Answer:
G.P.E = 368.3
Explanation:
Given the following data;
Mass = 2.63kg
Height, h = 14.29m
We know that acceleration due to gravity is equal to 9.8m/s²
To find the gravitational potential energy;
Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.
Mathematically, gravitational potential energy is given by the formula;
Where;
G.P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
G.P.E = 368.3
Note: the unit of gravitational potential energy is Joules.
391.12 * mass is required for activity of 315 ci
The activity of the radioactive substance is the number of disintegrations taking place in a radioactive sample.
Isotopes are the members of an element having the same number of protons but the different number of neutrons.
the activity of the radioactive sample is given as:
A = λ * N
where λ is the decay constant and N is the number of disintegrations.
activity is given as 315 ci
A = 315 * 3.7 *
= 1165.5 * Bq
λ = 0.693 /
= 0.693 / 2.69 * 24 * 3600
= 2.98 * t^-1
Therefore, N = A / λ
= 1165.5 * / 2.98 *
N = 391.12 *
391.12 * mass is required for activity of 315 ci
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