The first practical photocell was developed in 1954 by
A) Bell Laboratories
B) IBM
C) Microsoft
D) McDonalds
Correct Answer:
Verified
Q3: Select the correct statement.
A)Both visible light and
Q4: Select the correct statement.
A)In the Northern Hemisphere,
Q5: The major user of solar hot water
Q6: Conventional solar cells contain layers of
A)carbon
B)silicon
C)zinc
D)tin
Q7: Solar power requires backup systems for
A)windy days
B)cold
Q9: Active solar heating requires a _ between
Q10: The Stirling engine, developed in 1816, converts
A)motion
Q11: The use of wind power was first
Q12: The leader using wind power in the
Q13: Worldwide, the leader using wind power is
A)China
B)Germany
C)Spain
D)US
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