Which of the following is true of Mercury?
A) It has polar caps of solid water.
B) It is 95 percent the size of Earth.
C) It has negligible atmosphere.
D) It is the fourth largest planet of the Solar System.
C
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The reaction Fe + CuSO4 ? Cu + FeSO4 is a(n) ______________-replacement reaction
Fill in the blank(s) with correct word
The international standard time is called ______________
Fill in the blank(s) with correct word
Identical masses m are attached to identical springs of spring constant k suspended from the ceiling. With both masses hanging in their equilibrium positions, mass A is pulled down 10 cm and released while mass B is pushed up 10 cm and released. Which statement is correct?
a. Mass A will travel a smaller distance to its highest point than mass B will travel to its lowest point. b. Mass A will travel a greater distance to its highest point than mass B will travel to its lowest point. c. Masses A and B will travel equal distances between their highest and lowest points. d. More work was done on mass A by the extending force than on mass B by the compressing force. e. The total work done on mass A by the extending force was equal to the total work done on mass B by the compressing force.
Population II stars contain more metals than Population I stars
Indicate whether the statement is true or false