The colors of objects we see by reflected light are due to
a. interference c. specular reflection
b. selective absorption d. diffuse reflection
B
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What are electrons a type of?
A.) Proton. B.) Quark. C.) Neutron. D.) Neutrino. E.) Lepton.
A _____ is a large system of stars, star clusters, gas, dust, and nebulae orbiting a common center of mass
A) galaxy B) spiral arm C) planet D) solar system
The supernova that created the Crab nebula and its pulsar was seen on Earth in the year
A) 1604 BC. B) 1054 BC. C) 1054 AD. D) 1592 AD. E) 1604 AD.
A square aluminum fin having base temperature of 100ºC, 5 mm width, and 5 cm length is surrounded by water at 40ºC. Using h of 400 W/m^2?K, compare the heat transfer of the fin predicted by the three conditions: a) very long fin, b) adiabatic tip, and c) uniform convection heat transfer over the fin, including the tip. Assume a width of 1 m.
What will be an ideal response?