Which of the following affect(s) the half-life of a radiocative substance?

a. the addition of a catalyst.

b. the temperature of the substance.

c. the mass of the substance.

d. the type of isotope.

check all that apply.

!

option (D)

Explanation:

The half life of a radio active substance is defined as he time in which the activity of radioactive substance becomes half. For example let the halflife of a radioactive substance is T, it means its activity becomes half in time T.

The relation between halflife T and decay constant K is

T = 0.6931 / K

The half life of a radioactive substance is independent to the mass of substance, temperature of substance and the addition of catalyst.

It is different for different isotopes.

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

answer; how far out of place which the object finished relative to the starting location;