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Bài viết của Lê Thị Khánh Huyền

Vectors, Scalars, and Coordinate Systems

The motion of this Eclipse Concept jet can be described in terms of the distance it has traveled (a scalar quantity) or its displacement in a specific direction (a vector quantity). In order to specify the direction of motion, its ...

Tác giả: Lê Thị Khánh Huyền viết 14:58 ngày 25/05/2018 chỉnh sửa

Theories of Race and Ethnicity

Issues of race and ethnicity can be observed through three major sociological perspectives: functionalism, conflict theory, and symbolic interactionism. As you read through these theories, ask yourself which one makes the most sense, ...

Tác giả: Lê Thị Khánh Huyền viết 14:58 ngày 25/05/2018 chỉnh sửa

The Onset of Turbulence

Sometimes we can predict if flow will be laminar or turbulent. We know that flow in a very smooth tube or around a smooth, streamlined object will be laminar at low velocity. We also know that at high velocity, even flow in a smooth tube or around a smooth ...

Tác giả: Lê Thị Khánh Huyền viết 14:57 ngày 25/05/2018 chỉnh sửa

Introduction to Atomic Physics

Individual carbon atoms are visible in this image of a carbon nanotube made by a scanning tunneling electron microscope. (credit: Taner Yildirim, National Institute of Standards and Technology, via Wikimedia Commons) From ...

Tác giả: Lê Thị Khánh Huyền viết 14:57 ngày 25/05/2018 chỉnh sửa

Fetal Development

As you will recall, a developing human is called a fetus from the ninth week of gestation until birth. This 30-week period of development is marked by continued cell growth and differentiation, which fully develop the structures and functions of the immature ...

Tác giả: Lê Thị Khánh Huyền viết 14:57 ngày 25/05/2018 chỉnh sửa

Sensory Processes

Senses provide information about the body and its environment. Humans have five special senses: olfaction (smell), gustation (taste), equilibrium (balance and body position), vision, and hearing. Additionally, we possess general senses, also called ...

Tác giả: Lê Thị Khánh Huyền viết 14:57 ngày 25/05/2018 chỉnh sửa

Energy and Metabolism

Scientists use the term bioenergetics to discuss the concept of energy flow ([link]) through living systems, such as cells. Cellular processes such as the building and breaking down of complex molecules occur through stepwise chemical reactions. Some of these ...

Tác giả: Lê Thị Khánh Huyền viết 14:56 ngày 25/05/2018 chỉnh sửa

The Ray Aspect of Light

There are three ways in which light can travel from a source to another location. (See [link].) It can come directly from the source through empty space, such as from the Sun to Earth. Or light can travel through various media, such as air and glass, to the ...

Tác giả: Lê Thị Khánh Huyền viết 14:56 ngày 25/05/2018 chỉnh sửa

The Cytoskeleton

If you were to remove all the organelles from a cell, would the plasma membrane and the cytoplasm be the only components left? No. Within the cytoplasm, there would still be ions and organic molecules, plus a network of protein fibers that help maintain the ...

Tác giả: Lê Thị Khánh Huyền viết 14:56 ngày 25/05/2018 chỉnh sửa

Ecology of Fungi

Fungi play a crucial role in the balance of ecosystems. They colonize most habitats on Earth, preferring dark, moist conditions. They can thrive in seemingly hostile environments, such as the tundra, thanks to a most successful symbiosis with photosynthetic ...

Tác giả: Lê Thị Khánh Huyền viết 14:56 ngày 25/05/2018 chỉnh sửa

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Vectors, Scalars, and Coordinate Systems

Theories of Race and Ethnicity

The Onset of Turbulence

Introduction to Atomic Physics

Fetal Development

Sensory Processes

Energy and Metabolism

The Ray Aspect of Light

The Cytoskeleton

Ecology of Fungi

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