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If a 5 ft post cast a shadow of 1.2 ft find the length of the shadow for a 17 ft post?
The length of the shadow is proportional to the height of the post. Thus, if l is the length of the unknown shadow, l/17 = 1.2/5 or l = 4.1 feet. This should be rounded to 4 if the value 5 is not considered to be known to at least two significant digits.
At a certain time of day a person 6 feet tall casts a 4-foot shadow How long is the shadow cast by a 21-foot tree at the same time?
Designate the unknown shadow length by s. Shadows cast at the same time and place are proportional to the height of the object casing the shadow. Therefore: 4/6 = s/21, or s = [4(21)]/6 = 14 feet.
A 3 foot pole casts a 6 foot shadow A 4 foot pole casts an 8 foot shadow Use a linear equation to predict the length of a shadow cast by a 6 foot pole?
Shadow lengths are proportional to the heights of objects casting the shadows. Therefore, calling the shadow length l, the height h, and the proportionality constant k, l = kh. (The intercept is 0 because an object with no height casts no shadow.) Therefore, in this instance k = l/h = 6/3 or 8/4 = 2. then l(6) = 2 X 6 = 12 feet.
If a woman is standind and she is 64in tall with a 20in shadow and there is a lamppost that is 112in what is the length of the lampost's shadow?
If the lamppost is not the light source then lampost's shadow is 112/(64/20) ie 35 inches.
How high is a tree that casts a 25ft shadow?
You need more information to solve this problem. The length of a shadow depends on the angle of the sun which depends on the time of day.
Is a shadow at 1 pm the same as a shadow at 4pm?
No, the position and length of a shadow will change throughout the day as the angle of the sun changes. At 1 pm, the sun is higher in the sky, resulting in shorter shadows compared to 4 pm when the sun is lower and shadows are longer.
How do you use shadows to measure?
You can use shadows to measure the heights of trees, or buildings, as long as you can make two separate measurements at exactly the same time of day. While one person or group measures the length of the shadow of the tree or other object, another person or group carefully measures the length of the shadow cast by a smaller object, such as a person, sign, or pole.The ratio of the length of the shadow to the height of the object will be the same for almost every object casting a shadow at that particular moment of the day. So divide the known or measured height of a person by the length of his shadow to find this ratio, then multiply the other shadow length by this amount, to give a good estimate of the height of the taller object.Example:A tree's shadow at 5 PM is found to stretch 80 feet from the base of the tree.A boy is known to be 5 feet tall, his shadow at 5 PM is 10 feet long.(So the shadow length of other objects, measured at 5 PM, will all be twice their height.)5 ft/ 10 ft = 0.5 and 0.5 x 80 = 40 tells us the tree itself is about 40 feet tall.
If a 5 ft post cast a shadow of 1.2 ft find the length of the shadow for a 17 ft post?
The length of the shadow is proportional to the height of the post. Thus, if l is the length of the unknown shadow, l/17 = 1.2/5 or l = 4.1 feet. This should be rounded to 4 if the value 5 is not considered to be known to at least two significant digits.
Where is the sun to make the long shadow?
To make a long shadow, the sun has to be low in the sky, such as early morning and late afternoon. There would be a long shadow at 8 AM, 9 AM, etc. Also, there would be a long shadow at 4 PM and 5 PM. The noon sun is always low in the sky in winter and in the north of Norway, Sweden and Finland, you can observe long shadows at midnight, with the midnight sun.
Will your shadow be long or short when the sun rise?
Your shadow will be long when the sun rises, as the angle of the sun is low in the sky during that time. This creates elongated shadows due to the position of the light source in relation to objects on the ground.
If a nail is 50 millimeters in length what is its shadow length in millimeters?
Its shadow will be 50 millimeters in length, if you lay it down on a flat surface.
How many hours are there from 4 am to 8 pm?
There are 16 hours from 4 am to 8 pm. 4 am to 4 pm is 12 hours, then 4 pm to 8 pm is another 4 hours.
Thomas happened to notice that at 4 pm on his unlces farm a fense post that was 5 feet tall cast a 3 foot shadow he also noticed that a nearby tree casta 12 foot shadow how tall is the tree?
At any given time, shadow length is proportional to height. Therefore, if the unknown height of the tree is called h, 5/3 = h/12, or h = 12(5/3) = 20 feet.
What three things do length and position of a shadow changing depend on?
The length and position of a shadow depend on the angle of the light source, the distance between the object and the surface the shadow falls on, and the height of the object casting the shadow.
How does the length of a shadow change during the yearwhy does this happen?
The length of the shadow (on a flat, horizontal floor) depends on the height of the Sun. If the Sun is higher in the sky, the shadow will become shorter.
Does the length of a sun stick control the distance a shadow moves?
yes the length of the sun stick does control the distance the shadow moves
How long is the shadow of a 5 feet 4 inch person if a 8 foot cast a 3 foot shadow?
8 feet and 5 feet 4 inches are in a ratio of 3 to 2 so therefore the smaller shadow is 2 feet in length
