The form of heat transfer that doesn't depend on a medium is
A) conduction.
B) convection.
C) radiation.
D) all of the above
Answer: C
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The energy per unit volume in an EM wave is
A) equally divided between the electric and magnetic fields. B) almost entirely in the electric field. C) indeterminate. D) almost entirely in the magnetic field. E) zero.
When we say that the Sun is a ball of plasma, we mean that ________
A) the Sun is made of material that acts like a liquid acts on Earth B) the Sun is roughly the same color as blood C) the Sun is made of atoms and molecules D) the Sun consists of gas in which many or most of the atoms are ionized (missing electrons)
Power is defined as ________
a. the energy used times the time b. the work done times the distance of motion c. the energy used divided by the work d. the rate of converting energy e. the ability to do work
The various layers of the atmosphere are distinguished by the behavior of the ________
Fill in the blank(s) with correct word