In the greenhouse effect what type of radiation is re-emitted by the earth's surface and is absorbed and reflected by greenhouse gas molecules in the atmosphere warming the earth's surface and lower atmosphere?
A. Ultraviolet
B. Infrared
C. Gama
D. Nuclear
Answer: B
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What part separates the lower valve body from the upper valve body?
A) Valve body channel B) Separator plate C) Divider D) Valve springs
The amount of radiant energy emitted by a surface is given by 4 q ? ?? ATs , where q represents the rate of thermal energy, per unit time, emitted by the surface in watts; ? is the emissivity of the surface 0<1 and is unitless; ? is the Stefan- Boltzman constant (? = 5.67 x 108); A represents the area of the surface in m2; and Ts is the surface temperature of the object expressed in kelvin. What is the appropriate unit for ? if the equation is to be homogenous in units?
What will be an ideal response?
How are the inner tie rods attached to the rack on a center take-off type rack and pinion steering gear?
A) Pinned B) Bolted C) Staked D) Riveted
Using ____ allows each firm to have a current drawing file as a base while progressing with its work independently.
A. a sheet identifier B. a site plan C. an object line D. external referencing