A state government is trying to decide between using biomass or solar power to generate electricity. What advantage does solar power have over biomass?
A. Solar power can be used all day and night.
B. Solar power produces radioactive waste.
C. Solar power is a renewable energy source.
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D. Solar power produces no carbon dioxide.

D.Solar power produces no carbon dioxide

Explanation:

answer carbon and three oxygen atoms;

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.