The external expression of a mineral's orderly internal arrangement of atoms is referred to as:
its specific gravity.
its hardness.
its streak.
its crystal form.
its luster.
its crystal form.
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Mars's atmosphere is most similar in composition to the atmosphere of ________.
A. Mercury B. Venus C. the Moon D. Earth
Combining a neutron with a proton makes the proton electrically neutral.
Indicate whether the statement is true or false.
What is the current through the 2.0-? resistor?
a.
1.0 A
b.
0.50 A
c.
1.5 A
d.
2.0 A
Adisa pulls a 50-N crate up a 5.0-m long inclined plane at a constant velocity. If the plane is inclined at an angle of 37° to the horizontal and there is a constant force of friction of 10 N between the crate and the surface, what is the net change in potential energy of the crate?
a. 120 J c. 250 J b. -120 J d. 150 J