Is a space lift possible?

Is a space lift possible? A space elevator is possible with today’s technology, researchers say (we just need to dangle it off the moon) Space elevators would dramatically reduce the cost of reaching space but have never been technologically feasible. Is a space antenna possible? Ad Astra’s massive space antenna isn’t real, but scientists do […]

How are thermodynamic properties classified?

How are thermodynamic properties classified? Properties are classified as either intensive or extensive. Properties are intensive if independent of the amount of mass present and extensive if a function of the amount of mass present. Properties such as pressure, temperature, and density are intensive, whereas volume and mass are extensive. What are the thermodynamic properties? […]

What kind of bonding is there in semiconductors?

What kind of bonding is there in semiconductors? covalent bonds What is the difference between a conductor and a semiconductor? Difference between Semiconductors and Conductors The conductor has a large number of electrons for transmission, whereas semiconductor has a very little number of electrons for transmission. The flow of current in a conductor is due […]

What are the two main categories of machine movement?

What are the two main categories of machine movement? Motions. Power. Type. What are the different types of guards? There are four general types of guards: Fixed. Interlocked. Adjustable. Self-adjusting. What are the three main areas of a machine? Machine Guarding eTool | Introduction. All machines consist of three fundamental areas: the point of operation, […]

What type of reaction is melting?

What type of reaction is melting? Melting, or fusion, is a physical process that results in the phase transition of a substance from a solid to a liquid. This occurs when the internal energy of the solid increases, typically by the application of heat or pressure, which increases the substance’s temperature to the melting point. […]

How do you find the scalar product of two vectors?

How do you find the scalar product of two vectors? The scalar product of two vectors is obtained by multiplying their magnitudes with the cosine of the angle between them. The scalar product of orthogonal vectors vanishes; the scalar product of antiparallel vectors is negative. The vector product of two vectors is a vector perpendicular […]

Why did the Swedish ship Vasa sink?

Why did the Swedish ship Vasa sink? Only 1300m into its voyage, a light gust of wind toppled the ship over on its side. As water flooded through the gun portals of the ship, it sank in the shallow waters of Stockholm harbor and lay there at 32m, forgotten. Why was the Vasa so well […]

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