what is an impact, ballistic or creep ripple? what is the length of these ripples relative to their heights? how does this ratio compare to those for aerodynamic and hydrodynamic ripples?

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Answer 1

Impact, ballistic, and creep ripples are all types of surface features that can occur on materials subjected to different types of stresses.

Impact ripples are formed when a material is struck by a projectile or another object. Ballistic ripples are similar but are specifically formed by high-velocity projectiles. Creep ripples, on the other hand, are formed when a material is subjected to a constant stress over a long period of time, causing it to slowly deform.

The length of these ripples relative to their heights can vary depending on the specific material and conditions. However, in general, the ripples tend to have a relatively short wavelength compared to their height.

In comparison, aerodynamic and hydrodynamic ripples are formed by the flow of air or water over a surface. These ripples tend to have a much longer wavelength compared to their height, with the length-to-height ratio typically ranging from several to tens of thousands. This is because the fluid flow over the surface is generally much smoother and less abrupt than the stresses that cause impact, ballistic, and creep ripples.

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Related Questions

Which is a small plain text file that a website might place on your local drive?

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Answer:A cookie

Explanation:To track interests.

which safety hazard are firefighters most likely to find in the space between the ceiling and the roof?

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Firefighters are most likely to find the following safety hazards in the space between the ceiling and the roof: accumulation of combustible material, poor ventilation, and exposure to hazardous chemicals.

Accumulation of combustible materials such as wood, paper, insulation, and other debris can provide fuel for a fire, which can be difficult to contain in a confined space like the one between a ceiling and a roof.

Poor ventilation in this space can make it difficult for firefighters to breathe, and they can be exposed to hazardous chemicals such as asbestos, lead, and dust. Firefighters have to be careful with that.

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what is the purpose of the ground symbol used in electrical circuit diagrams? group of answer choices to show that there is a return path for the current between the source of electrical energy and the load. to show the source of electrical energy for the load. to show that there is common bus for connection of the source of electrical energy to the load.

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Answer:

To show that there is a return path for the current between the source of electrical energy and the load.

how does the sovent drainage and waste system operate without the venting piping used in traditional systems?

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The solvent drainage and waste system operates without venting piping by using a combination of air flow and pressure.

Instead of relying on venting piping to exhaust fumes and waste, the system takes in air from the atmosphere and circulates it through the system with a blower or compressor. This creates a pressure difference that drives the solvent out of the system, taking any remaining waste with it. The pressure also keeps odors from escaping and prevents the system from backflowing.

Drainage is the removal of a mass of water either naturally or artificially from the surface or subsurface from a place.

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