Very importantly, a hydraulic press can multiply
A) forces.
B) pressures.
C) energy.
D) all of the above
E) none of the above
Answer: A
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Earth's inner core is
a. liquid. b. part solid and part liquid. c. solid. d. molten.
How fast have we made subatomic particles travel inside particle accelerator?
A) within 0.00001% of the speed of light B) exactly the speed of light C) faster than the speed of light D) no more than half the speed of light E) no more than one-tenth the speed of light
The "atomic number" of an element that appears in the periodic table of the elements represents
A) the number of neutrons in the nucleus of an atom of that element. B) the number of protons in the nucleus of an atom of that element. C) the number of atoms in a molecule of the element. D) the number of electrons in the nucleus of an atom of that element. E) the number of nuclei in an atom of the element.
The Chandrasekhar limit is the largest ________ a white dwarf can have.
A. mass B. temperature C. speed D. wavelength