A force parallel to the x-axis acts on a particle moving along the x-axis. This force is associated with potential energy U(x) g
1 answer:
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Answer:
L = 40 cm
Explanation:
A microscope is an optical instrument built by two lenses in such a way that the image of the first is formed within the distance of the other (eyepiece), so that the latter creates an enlarged virtual image of the object, for which the magnification of the microscope is the same to the multiplication of the magnification of each lens
M = - L / f₀ (25 cm /)
where fo and fe are the focal lengths of the objective and eyepiece, 25 cm is the near vision distance and L is the length of the microscope
L = - M f_{o} f_{e} / 25
let's calculate
L = - (-100) 2 5/25
L = 40 cm
Answer:
To burst the second barrel, the height of water should also be equal to 20 feet
Explanation:
Diameter of the pipe on the first barrel = 1 ft
Diameter of the pipe on the second barrel = 1/2 inch
The pressure of water in the pipes needed to burst the barrel,
To burst the barrel having the larger pipe, water was filled to a height of 20 ft
Note that the pressure of water in the pipes as given by the equation above does not depend on the diameters of the pipe. It only depends on the height, density and acceleration due to gravity. Since the density of water and the acceleration due to gravity are constant, for the second pipe to also attain the same pressure as the first pipe needed to burst the barrel, the height of water in the two pipes must be equal