It increases with the motion of particles within a substance
I just took the test
the following equation is an example of alpha decay
Answer:
Gravity and magnetism are not the same thing. In fact, they are completely separate forces. Gravity is a force that acts between any two objects with mass. ... Magnetism can either pull the two objects together or push them apart, depending on which way the magnets point.
Explanation:
To calculate the threshold frequency of the metal we use the formula,
Also,
Here, E is the energy of electron per atom, h is plank constant.
Given, binding energy of electron or for one electron,, here N is the Avogadro constant and its value is , so and plank constant,
Substituting these values in above relation we get,
.
Thus, the threshold frequency of the metal is .
The average velocity can be calculated from the slope of the graph
Explanation:
In a position-time graph, the position is represented on the y-axis while the time is represented on the x-axis.
The slope of the graph is given by:
where
is the change in the y-variable
is the change in the x-variable
However, we have:
- corresponds to the change in position, therefore it is the displacement
- corresponds to the change in time
This means that the slope can be rewritten as
However, this ratio corresponds to the definition of average velocity:
Therefore, the slope of a position-time graph gives the average velocity.
Learn more about velocity:
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