If you are working with an extension ladder that has 15 rungs in each of the two sliding sections, this is a 30-foot extension ladder. It can be easily estimated by adding both lengths.
<h3>What is an extension ladder?</h3>
An extension ladder refers to a portable ladder that can be adjusted in its length and easily managed by the operator.
An extension ladder is very useful to climb up and/or down, thereby this tool should have vertical supports along its whole length in order to avoid accidents.
This type of ladder (extension ladder) may have different sections in order to reach a specific length during work.
Learn more about extension ladders here:
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Answer:
e)v=120 m/s
Explanation:
Given that
Scale ratio = 1/4
Speed of car =30 m/s
lets wind tunnel speed is v
We know that Reynolds number given as
If all conditions taken as similar then
Given that
So we can say that
4 x 30 = v x 1
v=120 m/s
Complete question is;
Lucy works for a company that manufactures liquid dyes for fabric. She currently wants to mix up some 23%-concentrated teal dye. She has 16 gallons of 15%-concentrated teal dye, as well as plenty of 25%-concentrated teal dye. How many gallons of the 25%-concentrated teal dye will Lucy need to add to the 15%-concentrated teal dye to make a batch with a concentration of 23%?
Answer:
64 gallons
Explanation:
We are given;
Quantity of 15%-concentrated teal dye = 16 gallons
Let the number of gallons of 25%-concentrated teal dye needed to add to make the batch with a concentration of 23% be represented as x.
Thus;
(15% × 16) + (25%)x = 23%(16 + x)
Multiply each term by 100 to give;
(15 × 16) + 25x = 23(16 + x)
240 + 25x = 368 + 23x
Rearranging, we have;
25x - 23x = 368 - 240
2x = 128
x = 128/2
x = 64
Explanation:
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Answer:
You should follow the officer's instruction and proceed with caution
Explanation:
You should always follow the lawful orders of an officer regardless of standard traffic procedures. This is typical because the officer needed to take control of a particular situation due to a crash or other potential hazard, making manual commands safer than standard road rules.
