Half-life is the time a. For half of a material to decay into energy b. For half of a material to decay into free protons, neutr
1 answer:
Answer:
Explanation:
The half life of a radioactive substance is the time in which the activity of the radioactive substance becomes half of its initial activity.
Or
The time in which the amount of radioactive substance becomes half of its initial amount in a sample.
It is denoted by T .
The relation between the decay constant and the half life is given by
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Answer:
a
The orbital speed is
b
The escape velocity of the rocket is
Explanation:
Generally angular velocity is mathematically represented as
Where T is the period which is given as 1.6 days =
Substituting the value
At the point when the rocket is on a circular orbit
The gravitational force = centripetal force and this can be mathematically represented as
Where G is the universal gravitational constant with a value
M is the mass of the earth with a constant value of
r is the distance between earth and circular orbit where the rocke is found
Making r the subject
The orbital speed is represented mathematically as
Substituting value
The escape velocity is mathematically represented as
Substituting values