The density of gold is 19.3. G/cm(3). If a nugget of iron pyrite and nugget of gold each have a mass of 50 g, what can you concl
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Answer:
Air kerma
Explanation:
The acronym for the word 'kerma' is . It is the sum or the total of the kinetic energies of the
that is liberated by the uncharged ionizing radiation in the small sample of a matter, and is divided by the mass of that sample.
It is sometimes used for expressing the radiation concentration that is delivered to a point.
It is used to specify the intensity of the x-rays for any given point in the air at some known distance form the local spot. The total air kerma can be monitored in the fluoroscopic procedure.
To solve the exercise it is necessary to apply the equations necessary to apply Newton's second law and the concept related to frictional force.
An angle of 30 degrees is formed on the vertical at an applied force of 2.3N
In this way the frictional force, opposite to the movement will be given by
where,
Kinetic friction constant
N = Normal Force (Mass*gravity)
The friction force is completely vertical and opposes the rising force of 2.3 N. The Normal force acts perpendicular to the surface (vertical) therefore corresponds to the horizontal component of the applied force.
The ascending force would be given by
As the block is moving upward, the friction force acts downward, also its weight acts downward. We can have
Considering the horizontal force the normal force on the block must be balanced by the horizontal component of pishing foce
Then the frictional force
Therefore the coefficient of kinetic friction is 0.26