An underwater scuba diver sees the Sun at an apparent angle of 47.9º from the vertical. What is the actual direction of the Sun relative to vertical?
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An underwater scuba diver sees the Sun at an apparent angle of 47.9º from the vertical. What is the actual direction of the Sun relative to vertical?
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- You are a detective interviewing someone who says that (while sitting on a porch that you know to be 600ft away) he saw the masked suspect commit the crime in broad daylight. "How do you know it was the suspect?" you ask. "I clearly saw the 'MOM' that is tattooed on his upper arm." "You're sure it was that particular tattoo and not some other tattoo?" "Yes, I'm sure," The witness replies. The suspect's tattoo has letters that are 6cm tall. Is the witness credible, or might he be framing the suspect? Justify your response and any estimates you might make.Please refer to part (b) of Figure 1 included with this quiz. Here, theta (the angle the incident ray makes with respect to the vertical) is 40.2 degrees. What is d (the distance between the ray emerging from the bottom of the glass and where the ray would have been if it had continued straight on with no glass to refract it)? 0.34 m 1.57 m 1.79 m 1.12 mThe high noon sun shines straight down on an airplane that is climbing through the atmosphere at an angle of 8.0° from horizontal. The plane's climb rate is 750 meters per minute. This the rate at which its altitude increases. (a) What is the speed of the airplane? (b) What is the speed of the plane's shadow crossing the flat desert below?
- You have enrolled in a scuba diving class and while swimming under water in a nearby lake you look up and note that the Sun appears to be at an angle of 17° from the vertical. At what angle above the horizon does the diving instructor standing on shore see the Sun? °An underwater scuba diver sees the Sun at an apparent angle of 44.0° above the horizontal. What is the actual elevation angle of the Sun above the horizontal? (Use 1.333 for the index of refraction of water.)The eyes of a person standing at the edge of a 1.2-m-deep swimming pool are 1.6 m above the surface of the water.Light coming from a silver dollar at the bottom of the pool entersthe person's eyes at an angle of 37° below the horizontal. Draw a picture of a light ray that leaves the dollar and enters the person'seyes and calculate the horizontal distance from the person to the dollar.
- Why were you not able to calculate ∠i ÷ ∠R or (sin ∠i ) ÷ (sin ∠R) for an angle of incidence of 0°?What is the critical angle (θC) for light emerging form carbon disulfide into air?The Sun appears at an angle of 52.8° above the horizontal as viewed by a dolphin swimming underwater. What angle does the sunlight striking the water actually make with the horizon? (Assume nwater = 1.333. Enter an answer between 0° and 90°.)
- The Area A1 is 3.14 m2, The Lamp #1 has a Luminous flux 400 lumens, and the Distance D1 is 4 meters. What is the illuminance on the A1 (the Lamp#2 is off)You have enrolled in a scuba diving class and while swimming under water in a nearby lake you look up and note that the Sun appears to be at an angle of 28° from the vertical. At what angle above the horizon does the diving instructor standing on shore see the Sun? (By the way I tried 38.6 and my teacher said it was wrong)Sunlight strikes the surface of a lake at an angle of incidence of 59.9°. At what angle with respect to the normal would a fish see the Sun?