Answer:
The distance is 6259.31 meters.
Explanation:
We shall use the Reyligh criterion to solve the problem
For diffraction due to circular aperture we have
Assuming that human eye is circular we have
Applying the given values we have
The human head weighs 4.8 kg and its center of mas 1.8 cm in front of the spinal column joint. If the trapezius muscle inserts 1
.1 cm behind the spinal cord joint, how much downward force does it need to exert in order to maintain equilibrium
2 answers:
Answer:
The downward force does it need to exert in order to maintain equilibrium is 76.974 N
Explanation:
The downward force does it need to exert in order to maintain equilibrium is:
Where
m = mass of human head = 4.8 kg
g = gravity = 9.8 m/s²
L = center of mass = 1.8 cm = 0.018 m
x = distance = 1.1 cm = 0.011 m
Replacing:
You might be interested in
The electrical potential energy of a charge q located at a point at potential V is given by
Therefore, if the charge must move between two points at potential V1 and V2, the difference in potential energy of the charge will be
In our problem, the electron (charge e) must travel across a potential difference V. So the energy it will lose traveling from the metal to the detector will be equal to
Therefore, if we want the electron to reach the detector, the minimum energy the electron must have is exactly equal to the energy it loses moving from the metal to the detector:
Therefore, if the charge must move between two points at potential V1 and V2, the difference in potential energy of the charge will be
In our problem, the electron (charge e) must travel across a potential difference V. So the energy it will lose traveling from the metal to the detector will be equal to
Therefore, if we want the electron to reach the detector, the minimum energy the electron must have is exactly equal to the energy it loses moving from the metal to the detector: