The eras in the history of mankind linked to materials.

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Answer 1

Question

Chapter 2, Problem 1RQ

To determine

The eras in the history of mankind linked to materials.

Expert Solution & Answer

Explanation of Solution

Mankind has evolved in a manner that the use of materials and tools during the evolution process is quite inextricable. The importance of the use of materials can be understood from the fact that the ages are recognized by the materials used. The eras are not characterized by the language the humans used, the economic achievement humans boasted or the social interactions, but the eras are characterized by the use of materials by humans in that particular developmental phase. The eras of evolution named after materials are as follows

Stone age: The earliest humans were hunter-gathers, and for hunting they required tools. The earliest humans saw the stones and turned the stones into the tools serving their purpose. The tools made of stones not only helped prehistoric humans in hunting but also in safety, in utensils etc. It is estimated that the stone age started 2.5 million years ago and ended at around 3300BC. It is to be noted that humans started using bones and pottery in this stone era.
Bronze age: The humans started exploring the earth and found ores of metals such as copper and tin. This led to the hardest metal known to humans at that time was bronze. The invention of bronze became the advent of the new era of Bronze. It is considered to be around 3200-600 BC. The bronze age is very significant for mankind because it was the first industrial process humans came across.
Iron age: The iron age is the shortest era in the sequence of prehistoric ages. The iron age saw the ferrous metallurgy employment, the evolution of steels in making tools, weapons, utensils, etc. The iron age ushered in the eras of new material development.

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**Problem 8-45.** The man has a mass of 60 kg and the crate has a mass of 100 kg. If the coefficient of static friction between his shoes and the ground is \( \mu_s = 0.4 \) and between the crate and the ground is \( \mu_c = 0.3 \), determine if the man is able to move the crate using the rope-and-pulley system shown. **Diagram Explanation:** The diagram illustrates a scenario where a man is attempting to pull a crate using a rope-and-pulley system. The setup is as follows: - **Crate (C):** Positioned on the ground with a rope attached. - **Rope:** Connects the crate to a pulley system and extends to the man. - **Pulley on Tree:** The rope runs over a pulley mounted on a tree which redirects the rope. - **Angles:** - The rope between the crate and tree forms a \(30^\circ\) angle with the horizontal. - The rope between the tree and the man makes a \(45^\circ\) angle with the horizontal. - **Man (A):** Pulling on the rope with the intention of moving the crate. This arrangement tests the…

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Answer 2

Question

Chapter 2, Problem 1RQ

To determine

The eras in the history of mankind linked to materials.

Expert Solution & Answer

Explanation of Solution

Mankind has evolved in a manner that the use of materials and tools during the evolution process is quite inextricable. The importance of the use of materials can be understood from the fact that the ages are recognized by the materials used. The eras are not characterized by the language the humans used, the economic achievement humans boasted or the social interactions, but the eras are characterized by the use of materials by humans in that particular developmental phase. The eras of evolution named after materials are as follows

Stone age: The earliest humans were hunter-gathers, and for hunting they required tools. The earliest humans saw the stones and turned the stones into the tools serving their purpose. The tools made of stones not only helped prehistoric humans in hunting but also in safety, in utensils etc. It is estimated that the stone age started 2.5 million years ago and ended at around 3300BC. It is to be noted that humans started using bones and pottery in this stone era.
Bronze age: The humans started exploring the earth and found ores of metals such as copper and tin. This led to the hardest metal known to humans at that time was bronze. The invention of bronze became the advent of the new era of Bronze. It is considered to be around 3200-600 BC. The bronze age is very significant for mankind because it was the first industrial process humans came across.
Iron age: The iron age is the shortest era in the sequence of prehistoric ages. The iron age saw the ferrous metallurgy employment, the evolution of steels in making tools, weapons, utensils, etc. The iron age ushered in the eras of new material development.

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Answer 3

Question

Chapter 2, Problem 1RQ

To determine

The eras in the history of mankind linked to materials.

Expert Solution & Answer

Explanation of Solution

Mankind has evolved in a manner that the use of materials and tools during the evolution process is quite inextricable. The importance of the use of materials can be understood from the fact that the ages are recognized by the materials used. The eras are not characterized by the language the humans used, the economic achievement humans boasted or the social interactions, but the eras are characterized by the use of materials by humans in that particular developmental phase. The eras of evolution named after materials are as follows

Stone age: The earliest humans were hunter-gathers, and for hunting they required tools. The earliest humans saw the stones and turned the stones into the tools serving their purpose. The tools made of stones not only helped prehistoric humans in hunting but also in safety, in utensils etc. It is estimated that the stone age started 2.5 million years ago and ended at around 3300BC. It is to be noted that humans started using bones and pottery in this stone era.
Bronze age: The humans started exploring the earth and found ores of metals such as copper and tin. This led to the hardest metal known to humans at that time was bronze. The invention of bronze became the advent of the new era of Bronze. It is considered to be around 3200-600 BC. The bronze age is very significant for mankind because it was the first industrial process humans came across.
Iron age: The iron age is the shortest era in the sequence of prehistoric ages. The iron age saw the ferrous metallurgy employment, the evolution of steels in making tools, weapons, utensils, etc. The iron age ushered in the eras of new material development.

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Answer 4

Question

Chapter 2, Problem 1RQ

To determine

The eras in the history of mankind linked to materials.

Expert Solution & Answer

Explanation of Solution

Mankind has evolved in a manner that the use of materials and tools during the evolution process is quite inextricable. The importance of the use of materials can be understood from the fact that the ages are recognized by the materials used. The eras are not characterized by the language the humans used, the economic achievement humans boasted or the social interactions, but the eras are characterized by the use of materials by humans in that particular developmental phase. The eras of evolution named after materials are as follows

Stone age: The earliest humans were hunter-gathers, and for hunting they required tools. The earliest humans saw the stones and turned the stones into the tools serving their purpose. The tools made of stones not only helped prehistoric humans in hunting but also in safety, in utensils etc. It is estimated that the stone age started 2.5 million years ago and ended at around 3300BC. It is to be noted that humans started using bones and pottery in this stone era.
Bronze age: The humans started exploring the earth and found ores of metals such as copper and tin. This led to the hardest metal known to humans at that time was bronze. The invention of bronze became the advent of the new era of Bronze. It is considered to be around 3200-600 BC. The bronze age is very significant for mankind because it was the first industrial process humans came across.
Iron age: The iron age is the shortest era in the sequence of prehistoric ages. The iron age saw the ferrous metallurgy employment, the evolution of steels in making tools, weapons, utensils, etc. The iron age ushered in the eras of new material development.

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Answer 5

Chapter 2, Problem 1RQ

To determine

The eras in the history of mankind linked to materials.

Expert Solution & Answer

Explanation of Solution

Mankind has evolved in a manner that the use of materials and tools during the evolution process is quite inextricable. The importance of the use of materials can be understood from the fact that the ages are recognized by the materials used. The eras are not characterized by the language the humans used, the economic achievement humans boasted or the social interactions, but the eras are characterized by the use of materials by humans in that particular developmental phase. The eras of evolution named after materials are as follows

Stone age: The earliest humans were hunter-gathers, and for hunting they required tools. The earliest humans saw the stones and turned the stones into the tools serving their purpose. The tools made of stones not only helped prehistoric humans in hunting but also in safety, in utensils etc. It is estimated that the stone age started 2.5 million years ago and ended at around 3300BC. It is to be noted that humans started using bones and pottery in this stone era.
Bronze age: The humans started exploring the earth and found ores of metals such as copper and tin. This led to the hardest metal known to humans at that time was bronze. The invention of bronze became the advent of the new era of Bronze. It is considered to be around 3200-600 BC. The bronze age is very significant for mankind because it was the first industrial process humans came across.
Iron age: The iron age is the shortest era in the sequence of prehistoric ages. The iron age saw the ferrous metallurgy employment, the evolution of steels in making tools, weapons, utensils, etc. The iron age ushered in the eras of new material development.

Answer 6

Chapter 2, Problem 1RQ

To determine

The eras in the history of mankind linked to materials.

Expert Solution & Answer

Explanation of Solution

Mankind has evolved in a manner that the use of materials and tools during the evolution process is quite inextricable. The importance of the use of materials can be understood from the fact that the ages are recognized by the materials used. The eras are not characterized by the language the humans used, the economic achievement humans boasted or the social interactions, but the eras are characterized by the use of materials by humans in that particular developmental phase. The eras of evolution named after materials are as follows

Stone age: The earliest humans were hunter-gathers, and for hunting they required tools. The earliest humans saw the stones and turned the stones into the tools serving their purpose. The tools made of stones not only helped prehistoric humans in hunting but also in safety, in utensils etc. It is estimated that the stone age started 2.5 million years ago and ended at around 3300BC. It is to be noted that humans started using bones and pottery in this stone era.
Bronze age: The humans started exploring the earth and found ores of metals such as copper and tin. This led to the hardest metal known to humans at that time was bronze. The invention of bronze became the advent of the new era of Bronze. It is considered to be around 3200-600 BC. The bronze age is very significant for mankind because it was the first industrial process humans came across.
Iron age: The iron age is the shortest era in the sequence of prehistoric ages. The iron age saw the ferrous metallurgy employment, the evolution of steels in making tools, weapons, utensils, etc. The iron age ushered in the eras of new material development.

Answer 7

Chapter 2, Problem 1RQ

To determine

The eras in the history of mankind linked to materials.

Answer 8

Expert Solution & Answer

Explanation of Solution

Mankind has evolved in a manner that the use of materials and tools during the evolution process is quite inextricable. The importance of the use of materials can be understood from the fact that the ages are recognized by the materials used. The eras are not characterized by the language the humans used, the economic achievement humans boasted or the social interactions, but the eras are characterized by the use of materials by humans in that particular developmental phase. The eras of evolution named after materials are as follows

Stone age: The earliest humans were hunter-gathers, and for hunting they required tools. The earliest humans saw the stones and turned the stones into the tools serving their purpose. The tools made of stones not only helped prehistoric humans in hunting but also in safety, in utensils etc. It is estimated that the stone age started 2.5 million years ago and ended at around 3300BC. It is to be noted that humans started using bones and pottery in this stone era.
Bronze age: The humans started exploring the earth and found ores of metals such as copper and tin. This led to the hardest metal known to humans at that time was bronze. The invention of bronze became the advent of the new era of Bronze. It is considered to be around 3200-600 BC. The bronze age is very significant for mankind because it was the first industrial process humans came across.
Iron age: The iron age is the shortest era in the sequence of prehistoric ages. The iron age saw the ferrous metallurgy employment, the evolution of steels in making tools, weapons, utensils, etc. The iron age ushered in the eras of new material development.