a-mirrored-glass-gazing-globe-in-a-garden-is-319-mathrmcm-in-diameter-what-is-the-focal-length-of-th

Name: a mirrored glass gazing globe in a garden is 319 mathrmcm in diameter what is the focal length of th
Uploaded: 2020-05-04
Duration: 49 s
Channel: Numerade
Description: A mirrored-glass gazing globe in a garden is 31.9 $\mathrm{cm}$ in diameter. What is the focal length of the globe?

Question

A mirrored-glass gazing globe in a garden is 31.9 $\mathrm{cm}$ in diameter. What is the focal length of the globe?

Nick Auwerda · Accepted Answer

question 19 says a mere glass gazing globe in a garden is 13.9 centimeters in diameter. No, 31.9 centimeters in diameter. And they asked us to find the focal length of the globe. Well, first, this is going to act convex. We can&#x27;t see inside the globe, so our focal length is going to be negative. Half the radius of curvature. Ah, and then we&#x27;ve got to be careful because that says radius. And they gave us the diameters. Remember, the radius is half of the diameter, and so we know that this is going to be negative half of half of 31.9. And if we do that math, we see that this is negative 7.9 75 centimeters.

Zachary Warner · Answer

the focal length of the Spirit KAL Mirror F is related to the radius are by the equation that says the focal length is equal to the radius divided by two. So if the radius of our spiritual mirror is equal to three meters than the focal, length is equal to three divided by two or 1.5 meters, so weaken box 1.5 meters and as our solution

Nick Auwerda · Answer

question. 33 says Ah person, 1.8 meters tall stands 0.86 meters from reflecting globe in a garden A. The diameter of the globe is 18 centimeters. Where is the image of the person relative to the surface of the globe? Well, since the Globe acts like a convex mirror, the images virtual forms behind it or inside the globe. So behind slash inside the globe. And then Part B says, How large is the person&#x27;s image? Um, this we got to do a little bit more with Remember, theon object height the opposite of the object height to the image. Height is equal to the object distance to the image distance and so we need the image distance. So we&#x27;re gonna go ahead and use the mere equation one over Dio plus one over D. I equals one over f. Now the focal length of ah, convex mirror is negative. Half of the radius. They told us this thing had a diameter of 18 centimeters. She&#x27;s got a radius of nine centimeters 90.9 meters and half of that 0.9 Divided by two is negative 20.45 for our focal e so f equals negative 0.45 meters. And so I have one over 10.86 plus ruling over D. I equals one over negative 10.45 So I&#x27;m gonna take negative 0.45 inverse minus pulling 86 in verse and then invert that whole thing and get an image distance. D I of negative 0.0 for 27 I&#x27;m gonna go with 270.43 centimeters. Now it is negative because it just behind the mirror. Now we can use the magnification equation. This one toe actually find our image height. So our object height is 1.8 meters. We want the opposite of that negative 1.8 over a chai is the same thing as the object distance, which in this case, is 0.86 over the object height or image height. Sorry, which is negative 0.0 for three. Now. I want the image height, so I&#x27;m just gonna take the reciprocal of both sides. So h I over negative 1.8 equals negative 0.43 over, um, 0.86 And then all I have to do is this math 0.0 for three, divided by pointing six times 1.8 to get my image height H I of 0.9 meters.

Shoukat Ali · Answer

in this problem, we are going to calculate the object distance from the mirror that is a dio in order to kill clergy. Sarah distance We use the middle equation as one divided by f physicals to when you wanted by the off plus one divided by d I. Here this is the focal point of the mirror and the Saudi eyes. I&#x27;m a distance now It&#x27;s going to square for when you went by Theo Weaken white one divided by dio is equals to one divided by F minus one divided by the recorded equation about one No, but it&#x27;s Eddie Williams into this question. We can white one day wanted by the all physicals to one you wanted by F which is equals to 42 centimeter minus one. You wanted body 97 cents. So this will be one of Allah for this as the always equals two. So what do four centimeters? So this is that a quite answer? Thank you

Mayukh Banik · Answer

in this party with their problem, the object distance and Emma&#x27;s distance both are given to be equal, and that is equals to readyto centimeters that in order to find focal, that we have to use the major equation one of f equals one of our baby. Not thus one of D I, which is one of 22 thus one of 22 Equus. Wonder what 11. So focal and ethic was 11 Sandy Leader.

Ryan Kutayiah · Answer

we&#x27;re till that we have a calm cave mirror with the radius of curvature of thirty four centimeters can impart They were as to find the focal length. Um so this is pretty straightforward, abusive equation thirty four point five, which has the focal length, is one half the radius of curvature. So that is thirty four centimeters about it by two, which is a seventeen centimetres. And in part B, um, we were told that the mirror is submerged in water on and then now we&#x27;re asked to find the focal length while the focal ankle remained the same because when the mayor is a submerged in water thie image formation is determined by the law of reflection. So the light is also propagating in water where the mayor is so we have the same focal length.

Problem

Sunlight reflects from a concave piece of broken …

Problem 19 Easy Difficulty

A mirrored-glass gazing globe in a garden is 31.9 $\mathrm{cm}$ in diameter. What is the focal length of the globe?

Answer

$-7.98 \mathrm{cm}$

Related Courses

Physics

Related Topics

Discussion

Top Physics 103 Educators

Elyse G.

Christina K.

Aspen F.

Jared E.

Physics 103 Courses

Wave Optics - Intro

Multiple Aperture Interference - Overview

Recommended Videos

Watch More Solved Questions in Chapter 26

Video Transcript

James S. Walker

Physics

Elyse G.

Christina K.

Aspen F.

Jared E.

Wave Optics - Intro

Multiple Aperture Interference - Overview

What do you need help with?

Textbooks

Ask a question

Courses

AI Tutor

$-7.98 \mathrm{cm}$

Physics

Elyse G.

Christina K.

Aspen F.

Jared E.

Wave Optics - Intro

Multiple Aperture Interference - Overview

James S. WalkerPhysics

Elyse G.

Christina K.

Aspen F.

Jared E.

James S. Walker

Physics