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4 years ago

A third class lever has a mechanical advantage of <1. What is an example of a third class lever and why use it?

Physics

2 answers:

Inessa05 [86]4 years ago

7 0

Answer:

" baseball ; increases velocity ".

Explanation:

A lever is a type of simple machine. There are three classes of lever i.e. first class, second class and third class.

Baseball bat is an example of third class lever. Its mechanical advantage of less than 1. In this type of lever, the input force is located between fulcrum and output force. It increase distance but do not change the direction of input force. As a result, velocity increases.

So, the correct option is (b) " baseball ; increases velocity ".

timurjin [86]4 years ago

6 0

Answer: Choice B: baseball bat; increases velocity

Explanation:

I got this right on my test !!!!!!!

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Answer

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4 years ago

plsssssss i need help Which source of law is most like common law: statutes, case law, or administrative law? Explain

Lisa [10]

Answer:

The answer is "case law".

Explanation:

This law is not based on law, but on legislatures, statutes, or legislation, on judgments. Its also used as a different term with common law, which is the collection of precedents as well as power on a specific subject established in previous judicial decisions that are a part of Common law, which is also recognized as case law to establish by the court system based on legal case law.

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3 years ago

What is the resultant displacement of the two vectors below

NeX [460]

Answer:

The resultant displacement is 5.8 cm, 31° South of the West axis ⇒ 4th

answer

Explanation:

A resultant vector is the combination of two or more single vectors

If the two vectors are perpendicular, then

The magnitude of the resultant vector = $\sqrt{x^{2}+y^{2}}$ ,where

x represents the horizontal vector and y represents the vertical vector

The direction of the resultant vector is $tan^{-1}\alpha$ , where α

is the angle between the horizontal vector and the resultant vector

Vector 1 is 5 cm due to West-axis

Vector 2 is 3 cm due to South-axis

We need to find the resultant displacement of them

The West and South are perpendicular

The West is the horizontal vector and South is the vertical vector

The magnitude of the resultant displacement s is:

$s=\sqrt{(5)^{2}+(3)^{2}}$

$s=\sqrt{25+9}$

$s=\sqrt{34}=5.8$

The direction of the resultant displacement s is:

$tan^{-1}\frac{3}{5}=31$ ° south of the west (between the west and

the resultant displacement)

The resultant displacement is 5.8 cm, 31° South of the West axis

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3 years ago

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wolverine [178]

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v=2 \cdot 10^6 \ \frac{m}{s} \\ \\ \\
t=\frac{d}{v} \\ \\
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3 years ago

A scientist studies the strengths of different types of wood, including oak and

AfilCa [17]

Explanation:

This is because the other variables in the other choices are relative to different observers and hence are not good to use in an experiment because there will be a lot of inherent bias by the person conducting the experiment For example how one person views how strong or beautiful the maple or oak looks may be different from how another person perceives the same.

However, weight is an absolute SI unit and does not vary from experiment to experiment. It is, therefore, a non-biased variable to use in the experiment and determine which wood between oak and maple can hold more weight.

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4 years ago