Answer: A 12 foot ladder would be the minimum length that is going to be required by a worker to access a landing nine feet above the adjacent floor
So with the standard terms the ladder should be at least 1 unit away for 4 feet of height so, keeping in mind the unitary method:
Height Away from base
4 1
9 x
The amount a 9 feet ladder should be away is:
x = 2.5 feet away from the base
Using the Pythagoras Theorem:
a² + b² = c²
place the values for the right triangle (a = 2.5, b = 9):
2.5² + 9² = c²
= 9.34 feet
Now, we know that the length of the ladder should always be more than the height you are trying to reach:
9.34 + 2 = 11.34
The minimum height of the ladder should be 11.34 feet. As a result, rounding off would result in a 12 foot ladder.
Answer:
1. Density is the amount of matter in a given volume or area. Density is also described as a measure of the compactness of matter. It is determined by dividing the amount of mass of a substance by its volume. D=m/v
2. As air is heated its density decreases because its mass remains constant but its volume increases. As air is cooled, its density increases because its mass remains constant but its volume decreases
Answer:
The first philosophers who are today referred to as having been rationalists include Descartes (1596-1650), Leibniz (1646-1716), and Spinoza (1632-1677). These thinkers thought they were defending a form of rational thought in the form of a science against the older school of thought known as scholasticism Rationalists, such as Descartes, have claimed that we can know by intuition and deduction that God exists and created the world, that our mind and body are distinct substances, and that the angles of a triangle equal two right angles, where all of these claims are truths about an external reality independent.
Explanation:
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Answer:A glacier's weight, combined with its gradual movement, can drastically reshape the landscape over hundreds or even thousands of years. The ice erodes the land surface and carries the broken rocks and soil debris far from their original places, resulting in some interesting glacial landforms.
Explanation:
A glacier's weight, combined with its gradual movement, can drastically reshape the landscape over hundreds or even thousands of years. The ice erodes the land surface and carries the broken rocks and soil debris far from their original places, resulting in some interesting glacial landforms.
