At 3:00 PM a man 135 cm tall casts a shadow 150 cm long. At the same time, a tall building nearby casts a shadow 164 m long. How tall is the building?

Q: Which of the following statements is not true regarding the speed of light     Speed of light…

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Q: Upon entering a medium in which the speed of light is 1.5 × 108 m/s from a medium in which the speed…

A: Given : Speed of light in medium 1 = 2 ×108 m/s speed of light in medium 2 = 1.5 × 108 m/s light…

Q: A beam of light passes through four Material 1 Material 2 materials, where the dashed line is the…

A: Given Data : The refractive index of material 1 is given as n1 = 2.1. The angle of incidence at…

Q: The absolute refractive indices of two medium 'X’ and 'Y' are 3/2 and 4/3 respectively. If the speed…

A:

Q: Light is incident at an angle of 35 o to the normal of the surface of a pond. From the water…

A: Using Snell's Law, with i and r being the incident and refracted angles and n2,n1 are refractive…

Q: 下 1.5 m K1.2 m -> 4.0 m

A:

Q: What condition must be true for total internal reflection to occur? OPTIONS Question 5 options:…

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Q: Sir or Maam, I inserted the whole question, but I only need help with D and E, please.  (This…

A: Given: 1 min = 60s 1 cm = 0.01 m v = speed of track = 1.35 m/s r1 = initial radius of track = 2.30…

Q: A 266 m tall building casts a shadow of length 246 m on level ground. What is the elevation angle…

A: Given : h = 266 m l = 246 m

Q: Light traveling in first medium with a speed of 1.5x108 m/s, strikes the surface of a transparent…

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Q: A diver shines a flashlight upward from beneath the water at a 42.5 degree angle to the vertical. At…

A:

Q: Light is travelling from diamond to air. Its speed in diamond is 1.24 X108 m/s. Find the critical…

A: given:- speed of diamond = 1.24 * 108 m/s.  speed of light in air = 3 * 108 m/s. we know ,…

Q: The speed of light in a certain type of glass is 1.66 x 108 m/s for blue light with a wavelength of…

A:

Q: A submarine is 2.90 x 10“ m horizontally from shore and 1.00 x 10 m beneath the surface of the…

A: horizontal distance of submarine from the shore (EB) = 290 m Depth of submarine from water level…

Q: What is the angle of deviation if a ray of light in water is incident at an angle of 25 degrees and…

A:

Q: An astronomer wishes to measure on a photograph the distance between the image of a certain star and…

A: Formula

Q: A swimmer, who is looking up from under the water, sees a diving board directly above at an apparent…

A: Given value--- apparent height = 4 m. We have to find--- actual height?

Q: Given a source of light located at 3 ft. from an opaque cylinder with a height of 2 ft. What is the…

A: We use the concept of similar triangles. If two triangles are similar, the ratio of the…

Q: Two converging lenses both of local length 20.0 cm are placed 8.00 cm apart. An object is placed…

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Q: At night, a person (in air) stands, at the edge of a water-filled swimming pool with a flashlight in…

A: The diagram is shown as,

Q: Monochromatic light travels from vacuum to an unidentified liquid. This light has a wavelength of…

A: Velocity , v = 1.97 x 108 m/s Angle of incidence , θi = 31.2° To find = angle of refraction

Q: Compute the index of refraction for the substance where lightpropagates with speed v = 1.4 × 10 8…

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Q: A swimmer is swimming across a 57 m wide river at 2.9 m/s. When he reaches the other bank, he is 30…

A:

Q: The speed of light in leaded glass is 1.66 × 108 m/s. What is the index of refraction of this type…

A:

Q: A man 1.80 m tall stands in front of a mirror and sees his full height, no more and no less. If his…

A:

Q: What is the shape of the wavefront in each of the following cases:(a) Light diverging from a point…

A: Given:  Given light sources

Q: An opal acts like a reflection grating with rows separated by about 5.6μm. If the opal is…

A: In this question we have to find the angle at which red light could be seen.

Q: A girl standing on the edge of a pond observes a fish that is 2 m deep as shown in the figure. If…

A: An observer observing the depth of an object in water,  Apparent depth, d = 2 m Observation angle,…

Q: A ray of light is travelling from a rarer medium to a denser medium. While entering the denser…

A: Option b  Bends toward the normal

Q: An unknown material has an index of refraction 2.42. What is the speed of light in the material ?

A: Given data: The index of refraction for unknown material is n=2.42.

Q: Refraction of light would most likely occur when a. light hits a wall b. light hits a mirror c.…

A: Refraction is a change in the direction of passing of a wave from one medium to another or a gradual…

Q: A ray of light leaves air (n = 1) and enters glass (n = 1.5). Once inside the glass, the light is at…

A: Given data:  Index of refraction of air (n1) = 1 Index of refraction of glass (n2) = 1.5 Angle of…

Q: A beam of light travels from air to liquid. If the angle of incidence is 36.87 degree and angle of…

A: Using Snell's law: n1*sin A1 = n2*sin A2 A1 = Angle of incidence = 36.87 deg A2 = Angle of…

Q: The speed of light in a vacuum is 3 x 108 m/s. 108 m/s. The speed of light within a particular…

A: Answer:- Refractive index = 1.5 Given  Speed of light in vacuum (V1) = 3 × 108m/s  Speed of light in…

Q: What is the critical angle if a light ray begins in an object with an index of refraction of 1.7 and…

A: a light ray begins in an object with an index of refraction of 1.7 and enters a substance with an…

Q: Light travels through a vacuum at a speed of 2.998 x 108 m/s. Determine the speed of light in the…

A: Given,

Q: child sees a coin apparently 24 cm from the top surface of a plastic plate. The coin is actually…

A:

Q: Goku, flying at an altitude of 210 m above the surface of the ocean, sees Vegeta below the surface…

A: We know that when we see from the above of the surface of the water we see a Vegeta below the…

Q: A man 167.68 centimeters tall .is walking directly away from a lamp post fronting a building at the…

A: The diagram of the system is as follows:

Q: What is the critical angle for light passing from a. air(n = 1.0003) to ethyl alcohol(n = 1.36)…

A: The given data's are the refractive indices of  air =1.0003 ethyl alcohol =1.36 ice =1.31…

Q: Light traveling in first medium with a speed of 1.5x108 m/s, strikes the surface of a transparent…

A:

Q: When we drop a coin into a cup of water, the coin appears to be floating and bigger under the water.…

A: Refraction takes place when light enters from one transparent medium to another.

Q: A woman on shore standing close to the sea water's edge looks toward the direction of the sea. If…

A:

Q: 3. What is the wavelength of an earthquake that shakes you with a frequency of 10 Hz and gets to…

A: Recall  v=fλ  for wave velocityandm=v/u where v is image distance and u is object disrtance and m is…

Q: Light in air approaches the boundary of oil at an angle of 36.1 degrees with respect to the normal.…

A: According to snells law,

Q: Compute the index of refraction for the substance where lightpropagates with speed v = 2.1 × 10 8…

A: