What is a blackbody? How do real bodies differ from blackbodies?

What will be an ideal response?


A blackbody is an idealized body which emits the maximum amount of radiation at a given temperature and which absorbs all the radiation incident on it. Real bodies emit and absorb less radiation than a blackbody at the same temperature.

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The best way to check the efficiency of individual cylinders is:

A. Five gas analysis B. A compression test C. A vacuum test D. A power balance test

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?Technician A says that an oil filter used in a bypass system can filter out smaller particles from the oil than a full-flow system. Technician B says that a full-flow filter that is mounted in a horizontal or inverted position requires an antidrainback valve. Who is right?

A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B

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A ____________________ is a combination of seed from cultivars of the same species

Fill in the blank(s) with correct word

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Cut flower coolers must have high relative humidity levels to keep flowers from desiccating (drying

out). A relative humidity of about ____ is optimal in a cut flower cooler.

a. 70% c. 90% b. 80% d. 98%

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