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The induced surface charge is influenced by external electric fields. When an external electric field is applied, it can attract or repel charges on the surface, causing the distribution of charges to change. This can result in an increase or decrease in the induced surface charge depending on the direction and strength of the external electric field.
Pressure is the external force acting over a unit surface area of a material. Stress is an internal force acting over a cross sectional area within the material. It may also be thought of as the internal resistive response of a material to the applied external pressure. They both have the units of force / area. think it as- suppose we have a cubical solid mass. we apply external force of few magnitude on it and this force will try to deform the cube. at the same instant an internal force will generate within the cube that will try to maintain the shape and size of the cube i.e. this internal force will work against the applied external force. this induced force within the cube is stress.
An epithelium always has on surface where the cells are exposed either to the external environment or to an internal passageway or cavity; this surface is called the free surface of the epithelium.
External friction is the resistance that occurs when an object moves through or along a surface due to external forces, such as air resistance or friction between the object and the surface it is moving on. It is a force that opposes the motion of an object and can affect the speed and efficiency of the object's movement.
Surface tension in liquids is caused by the cohesive forces between the molecules at the surface of the liquid, which creates a "skin-like" layer that resists external forces.
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Mountains are a feature sculpted on Earth's surface by internal forces such as tectonic plate movements or external forces like erosion from wind and water. They are formed when the Earth's crust is pushed together or pulled apart, resulting in uplifted landforms with peaks and valleys.
A mountain is formed by both internal and external forces. Internal forces, such as tectonic plate movement and volcanic activity, cause the uplift of the Earth's crust. External forces, such as erosion by wind, water, and ice, shape the mountain's surface over time.
An epithelium always has on surface where the cells are exposed either to the external environment or to an internal passageway or cavity; this surface is called the free surface of the epithelium.
Internal forces of change, like tectonic plate movement, can lead to large-scale changes on Earth's surface such as mountain formation, earthquakes, and volcanic eruptions. In contrast, external forces of change, such as erosion by wind and water, shape the surface through processes like weathering and sediment transport. Both internal and external forces play complementary roles in shaping and transforming Earth's surface over time.
External forces, such as weathering and erosion, shape surface landforms through the gradual breakdown and transportation of rocks and soil. Internal forces, like tectonic activity, produce landforms by causing uplift, folding, faulting, and volcanic eruptions that change the earth's crust. Both external and internal forces work together to create and modify the Earth's surface features over time.
Epithelial tissue is the type of tissue that always has a free surface exposed to the internal or external environment. This tissue serves as a protective barrier or lining for organs and cavities in the body.
Internal forces: tectonic plate movement, volcanic activity, and earthquakes. External forces: weathering, erosion by water/wind/ice, and impact events (e.g. meteorites).
An internal parasite feeds with his entire body inside the surface (epithelium, for animals) of the host, while an external parasite feeds with part of, or whole body standing outside the host's surface.
About of Blood's flow:A fluid flow is classified as being internal or external, depending on whether the fluid is forced to flow in a confined channel or over a surface. The flow of an unbounded fluid over a surface such as a plate, a wire, or a pipe is external flow. The flow in a pipe or duct is internal flow if the fluid is completely bounded by solid surfaces. The flow of liquids in a duct is called open-channel flow if the duct is only partially filled with the liquid and there is an free surface, e.g. the flows of water in rivers and irrigation ditches.
External process occur on the surface of the earth . It is slow change . Ex- change in leevel of the earth . Internal process occur inside the surface of the earth . It is sudden change . Ex -earthquake activities