A rug sits in a sunny place on the floor for a long time. Kiara thinks that light from the sun can cause the rug's color to fade
1 answer:
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a) The mass of the black hole is
b) The black hole is 5 times more massive than the sun
Explanation:
a)
The magnitude of the gravitational force between the black hole and the star is:
where :
is the gravitational constant
m is the mass of the star
M is the mass of the black hole
r is the separation between the objects
According to Newton's second law, the force acting on the star can be also written as
where a is the acceleration
Combining the two equations,
where:
is the distance between the two objects
is the acceleration of the star
Solving for M, we find the mass of the black hole:
b)
The mass of the Sun is:
while the mass of the black hole in this problem is
Therefore, the mass of the black hole written in terms of the solar mass is:
So, the black hole is 5 times more massive than the sun.
Learn more about gravitational force:
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Answer:
Intensity Of MRI signal is related as square of
or
Intensity is related as .
Explanation:
MRI simply means Magnetic Resonance Imaging. In this process by the resonance of magnetic field the frequency is produced which is used to image the body parts (Mainly the brain).
The signal Strength is the rate of change of Magnetization (M) with respect to the time. For the calculation of Intensity we use Bloch equation which is given by
On further solving
So, Intensity is related as .