A change of 100o on the Celsius scale is
equal to a change of how many degrees on
the Fahrenheit scale?
a)212
b)120
c)100
d)180
d
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Forces that are equal in size and opposite in direction are known as
a. balanced forces b. net forces c. friction forces d. accelerated force
What happens to the core of a star after a planetary nebula occurs?
A) It contracts from a protostar to a main-sequence star. B) It breaks apart in a violent explosion. C) It becomes a white dwarf. D) It becomes a neutron star. E) It can become either a neutron star or a black hole.
An electron in a hydrogen atom has orbital quantum number l = 7. How many possible values of the magnetic quantum number ml could it have?
A) 6 B) 7 C) 15 D) 33 E) 98
What three factors affect porosity?
What will be an ideal response?