Which of the following microscopes is capable of "photographing" individual atoms?
A)
light microscope
B)
scanning tunneling microscope
C)
scanning electron microscope
D)
transmission electron microscope
E)
transmission scanning microscope
B
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The cell theory states that all organisms consist of one or more cells, the cell is the basic unit of life, and all cells arise from existing cells. This is a scientific theory. How could the cell theory be disproven?
What will be an ideal response?
When a boxer hits a punching bag, the strength of his punch depends on how much force the bag can
A) endure. B) exert on the boxer's fist. C) soften.
Which of the following facilities are needed to produce a plutonium A-bomb?
A) enrichment plant B) nuclear reactor C) Both of the above. D) a fusion bomb E) All of the above.
Specific Heat: Object 1 has three times the specific heat capacity and four times the mass of Object 2. The two objects are heated from the same initial temperature, T0, to the same final temperature Tf. During this process, if Object 1 absorbs heat Q, the amount of heat absorbed by Object 2 will be
A. 12Q.
B. 6Q.
C. 
Q.
D. 
Q.
E. 
Q.