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Distance through the center of an object - The Optics

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  • james laughton
    james laughton Apr 28, 2017

    Hi Dustin Tholl, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?

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An object undergoes free fall for 126m on a fictitious planet (Whoosedat) It takes 6.00s to travel 126m. What is the acceleration of gravity on Whoosedat?


For any free-falling object, the distance traveled by that object can be represented as:

s = 1/2 g t2


where

s = distance traveled by the object, g = gravity, t = time




So, if we resolve for g, we get:



g = (2 x s) / t2




So, by replacing the known values we get the acceleration of gravity for that planet:

g = 7 m/s2

Sep 17, 2013 | Office Equipment & Supplies

1 Answer

How do i the camera to take smaller pictures and if it is by using the zoom do I zoom in or out.. Thanks


Hi sportingnut4 ,

Thanks for the question ,

  1. If you mean by smaller pictures i.e. small in area you have to capture the images keeping the distance in perspective.
  2. If the distance between the image and camera is more , you would find the object being captures is small and if the distance is less , you would find that the object that has been captured is bigger.
  3. If you want to capture an object which is far away you can use the Zoom In function which would zoom your camera's lens in the object.
  4. If you have already Zoomed in , then to decrease the zoom i.e. to go away from the object as if you are increasing the distance between the object and the camera , you should Zoom out.
  5. Remember , Zoom out usually only works when you have already used the Zoom in function of the camera.
Hope this helps.

May 11, 2011 | Sanyo VPCE890 Digital Camera

1 Answer

250J of work is done when a force of 50N is applied on an object. calculate the distance through which the object moves


Work = Force X distance
250J = 50N X distance
Consider that 250J = 250 N.m(Newton meter or Newton multiplied by meter)
250Nm = 50N X distance
Divide both sides of the equal sign by 50Nm and the answer is 5m

Nov 08, 2010 | 1990 Daihatsu Charade

1 Answer

When i look in the finderscope the objects r upside down but when i look in the big one theres nothing,even when i try and zoom in and out thers nothing moving


Some finders show things upside down. There is no up or down in outer space.

During the daytime focus on an object like the top of a telephone pole a good distance away.

Without moving the telescope adjust the finder scope so that the "crosshairs" in the finder are centered on the same object as the main tube. Most astronomical telescopes show upside down and reversed images.

Nov 04, 2009 | Meade (r) TeleStar Manual 60mm Refractor...

1 Answer

My Pinseeker 1500 picks up objects at close distances (50 yds +/- but not at longer distances. Whats wrong and is it an easy fix?


This unit needs an alignment. If it has oily looking spots in the display it also needs the LCD replaced. If it is less than 2 years from the date of purchase its still under warranty.

Bushnell repair center
8500 marshall drive
Lenexa, ks 66214

# 800.423.3537

$50.00 for alignment
$15.00 if the LCD needs to be replaced
$15.00 for all other maintenance performed.

Oct 08, 2009 | Bushnell PinSeeker 1500 20-5103...

1 Answer

How to use the reticle in my Fujinon Mariner Binoculars?


How to use the reticle:
The vertical scale (reticle) visible through the left half of the binocular, above the compass display, allows you to calculate distance to an object if you know its height, or to calculate the height of an object if you know its distance from you.
Each mark on the vertical scale has a value of 5 MIL (1Mil is equivalent to an angel that can determined an object one meter in height at a distance of 1000 meters). Therefore, if a navigation chart gives the height of an object, by sighting on it and counting the number of MILS, you can determine how far away it is.
To Measuer distance when height is known:
Object Height(m)/Scale Reading x 1000m=Distance in Meters
To Measure height when distance is known:
Distance(m)xScale Reading/1000=Object height in meters

Jan 26, 2009 | Fujinon Mariner WPC-XL Binocular

1 Answer

Double image


The distance between the centers of the eyepieces of your binocular must be the same as the distance between your pupils. This distance is adjusted as follows: 1. Focus on a distant object. 2. Pivot the two halves of your binocular farther or closer apart until you can see a single unobstructed, circular field of view. Make sure to focus on a distant object when you do this because when you focus on a close object you always see two slightly overlapping circular fields. Your binocular may have a scale on the top, between the eyepieces, to help you remember this setting.

Aug 03, 2007 | Bushnell 10 x 42mm Sportsman Binoculars

1 Answer

Double vision


The distance between the centers of the eyepieces of your binocular must be the same as the distance between your pupils. This distance is adjusted as follows: 1. Focus on a distant object. 2. Pivot the two halves of your binocular farther or closer apart until you can see a single unobstructed, circular field of view. Make sure to focus on a distant object when you do this because when you focus on a close object you always see two slightly overlapping circular fields. Your binocular may have a scale on the top, between the eyepieces, to help you remember this setting.

Jul 03, 2007 | Bushnell Powerview - Compact 10 x 25...

1 Answer

Focusing Difficulties


1. Typical problem subjects for autofocus 1) Very low-contrast subjects 2) Overlapping nearby and distant objects 3) Very bright subjects in the center 4) Subjects moving very fast 5) Subjects through glass Focus on an object that is at the same distance as the desired subject, apply Focus Lock, and then recompose the picture. Or set the lens focus mode switch to (or), and focus manually. (Manual focus is only possible with cameras providing this feature.) 2. Attempting to take pictures out of the camera's shooting distance: When taking pictures out of the camera's shooting distance, the subject will be out of focus. The shooting distance differs from each camera model. Please check the specifications of your camera in the instruction manual to determine the shooting distance.

Aug 29, 2005 | Canon PowerShot SD10 / IXUS I Digital...

1 Answer

Focusing Difficulties


1. Typical problem subjects for autofocus 1) Very low-contrast subjects 2) Overlapping nearby and distant objects 3) Very bright subjects in the center 4) Subjects moving very fast 5) Subjects through glass Focus on an object that is at the same distance as the desired subject, apply Focus Lock, and then recompose the picture. Or set the lens focus mode switch to (or), and focus manually. (Manual focus is only possible with cameras providing this feature.) 2. Attempting to take pictures out of the camera's shooting distance: When taking pictures out of the camera's shooting distance, the subject will be out of focus. The shooting distance differs from each camera model. Please check the specifications of your camera in the instruction manual to determine the shooting distance.

Aug 29, 2005 | Canon PowerShot SD100 / IXUS II Digital...

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