Question

In: Physics

The depth of the water body is 2 meters. (a) There shall be a light source...

The depth of the water body is 2 meters.
(a) There shall be a light source at the bottom of the body of water, a disc of opaque material floating on the
the center is exactly above the light source. Calculate the minimum radius of the disk so that none
the light beam from the light source would not escape from the water. Make an explanatory drawing with it applied
the path of the light rays and the angles used in the formulas.
b) Calculate the apparent depth of the body of water for an observer looking at the water surface at an angle of 30 degrees
with respect to the vertical. Make an explanatory drawing showing the course of the light rays and the formulas
angles used.

Solutions

Expert Solution


Related Solutions

A light year is the distance light travels in 1 year. Light travels at 3*108 meters*...
A light year is the distance light travels in 1 year. Light travels at 3*108 meters* sec-1. Write a program that calculates and displays the number of meters light travels in a year.
The speed of a water wave is described by v= (gd)^(1/2)  where d is the water depth,...
The speed of a water wave is described by v= (gd)^(1/2)  where d is the water depth, assumed to be small compared to the wavelength. Because their speed changes, water waves refract when moving into a region of different depth. Suppose waves approach the coast from a storm far away to the north–northeast. Demonstrate that the waves move nearly perpendicular to the shoreline when they reach the beach. Suppose waves approach the coast, carrying energy with uniform density along originally straight...
Fluid Mechanics: A water tank is a cylinder 4 m in height and 2 meters in...
Fluid Mechanics: A water tank is a cylinder 4 m in height and 2 meters in diameter. The tank is full at time to. The tank sits on a platform 12 m tall. A water tap is located at the bottom center of the tank. The tap, when actuated, opens to a pipe 5 cm in radius. a.       Write down Bernoulli’s equation. Identify the Pressure, Kinetic and Potential Energy terms. Show that each has the units of an energy density...
"Business is Business and Ethics is Ethics and Never the Twain Shall Meet" In the light...
"Business is Business and Ethics is Ethics and Never the Twain Shall Meet" In the light of ethics theories and current business practice, discuss this quotation briefly
Place 4 charges at the corners of a square which is 2 meters by 2 meters...
Place 4 charges at the corners of a square which is 2 meters by 2 meters (4 large squares along each length). Place two +1 nC charges at adjacent corners and two -1 nC charges at the other two corners. Determine the direction of the electric field at the following three points: Point E halfway between two like charges. (-120 degrees, 50 V/m) Point F halfway between two opposite charges. (-90.5 degrees, 309 V/m) Point G at the center of...
A well was drilled to 3000 meters depth with a casing of (9 5/8 inches) nine...
A well was drilled to 3000 meters depth with a casing of (9 5/8 inches) nine and five eigths inches with an internal diameter of 6,69 inches, they continued drilling up to 4800 meters obtaining a diameter of 6.7 inches average. Before finishing the drilling they made a test with a drill pipe of (5 1/2 inches) five and a half inches long with a diameter of 4,78 inches until the bottom of the well. If we consider that the...
2. Name 2 types of water pollution (not sedimentation) and provide a common source (cause) for...
2. Name 2 types of water pollution (not sedimentation) and provide a common source (cause) for each. 1) 2)
A circularly polarised beam of light with a vacuum wavelength of 1.55 micro meters is incident...
A circularly polarised beam of light with a vacuum wavelength of 1.55 micro meters is incident on a two cascaded quarter wave-plates, followed by a third unknown wave-plate. The light emerging from the system remains circularly polarised. Find out the Jones vector characterizing the state of polarisation of the incident beam of light?
Intense monoenergetic light source shines on piece of metal. When wavelength of the light is more...
Intense monoenergetic light source shines on piece of metal. When wavelength of the light is more than 620 nm, no photoelectrons are emitted from metal, and shorter wavelengths begin to produce a flux of photoelectrons. A 248 nm light source is aimed at the same metal, hitting the metal with a power of 0.75 W. (a) What is the range of energies of photoelectrons produced? (b) The electrons pass through a single slit, with slit width a= 150 nm and...
The illumination of an object by a light source is directly proportional to the strength of...
The illumination of an object by a light source is directly proportional to the strength of the source and inversely proportional to the square of the distance from the source. If two light sources, one three times as strong as the other, are placed 11 ft apart, how far away from the stronger light source should an object be placed on the line between the two sources so as to receive the least illumination? (Round your answer to two decimal...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT