What is the role of Francis Bacon in the development of fuel cells?
What will be an ideal response?
After 1840s, significant work on the fuel cells did not resume until the 1930s when a chemical engineer at Cambridge University, by the name of Francis Bacon, began serious work on the fuel cell again.
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Photovoltaic cells supply (approximately) constant ___________ over the operating range.
Fill in the blank(s) with the appropriate word(s).
Objects can fall from scaffolding, so to protect workers of the ground, you must _____.
a. erect barriers beneath the scaffolding to prevent pedestrian traffic b. use debris nets, screen, or mesh and install scaffolding toe boards c. shout "heads up" to warn those working below of falling objects d. use scaffolding only when there is no one else working in the area
A thermistor is a device that produces a voltage across the hot and cold junctions when heated.
Answer the following statement true (T) or false (F)
Thermodynamics refers to energy movement from __________.
A. hot to cold B. cold to hot C. both a and b