Presuming that it takes several billion years of complex live to evolve in a stable environment, the stars most likely to currently have inhabited planets are
a. G to K main sequence stars.
b. B to A main sequence stars.
c. G to K giants.
d. white dwarf stars
e. neutron stars.
A
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Identify the FALSE statement. The big bang:
occurred more than 13 billion years ago. cataclysmically exploded matter outward. began with all matter and energy concentrated in an infinitesimally small point. theory states that at the instant of explosion, everything had so much thermal energy even the smallest atomic pieces couldn't exist. is the explanation for how our Solar System developed.
When an electron in an atom moves from a lower energy level to a higher one, a ______________ is ______________
a. photon; emitted b. proton; emitted c. photon; absorbed d. proton; absorbed
For the wing of Problem 4-17, if the heat loss is expected to be 400W/m^2 on each side of the wing estimate the temperature distribution along the wing.
What will be an ideal response?
An object is submerged in a swimming pool and of course the water exerts a buoyant force on the object. Suppose a thousand gallons of oil is spilled into the pool and now floats above the water
How is the buoyant force on the object changed by the overlying oil?