When an object experiences uniform circular motion the direction of the net force is?
1 answer:
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Answer:
When a an object is been rotated its resistance capacity to that rotational force is know as rotational inertia and this mathematically given as
Where m is the mass
r is the rotation radius
For the spinning of the lamp as a baton to work the location of the center of mass of the floor lamp needs to be located
This is more likely to be located closer to base of the lamp as compared to the top, so success of spinning a floor lamp like a baton is highly likely if the lamp is grabbed closer to the base because that is where the position of its center of mass is likely to be.
Explanation:
From the activity values and the decay constant, the mass of of Strontium in the sample is:
The decay constant of an element is the probability of decay of a nucleus per unit time.
{λ = ln 2 / t1/2
where;
t1/2 is the half-life of the isotope.
The half-life is converted to seconds since the decay constant is asked in per seconds.
Hence;
The activity of the element, A, the decay constant, λ and the number of nuclei, N are related as follows:
- A = (–) λN
Molar mass of Strontium-90 is 90 g.
1 mole of Strontium-90 contains 6.02×10^23 nuclei.
The mass, m of Strontium in the sample is calculated:
Therefore, the mass of of Strontium in the sample is:
Learn more about decay constant at: brainly.com/question/17159453