As ice is changed to water, energy is
A) given to the ice.
B) taken from the ice.
C) neither of these
Answer: A
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Which statement best describes a neutron star's formation as a supernova explodes and the core begins to collapse inward?
a. neutrinos and antineutrinos combine into neutrons b. electrons and protons combine into neutrons and neutrinos c. electrons and protons combine into neutrons and neutrinos d. electrons and positrons combine into neutrons and neutrinos e. protons and antiprotons combine into neutrons and neutrinos
which of the following is true for the monuments built by ancient civilization?
A. they are based on stars. B. they are based on change in the alludes of sun during seasonal changes. C. the apex of these monuments pointed to stars. D. the geometry and architecture are based on the heavenly bodies e. all of the above
The combining of two nuclei to form a larger nucleus with the release of energy is __________
Fill in the blank(s) with correct word
The source of magnetism is
a. polarization. b. magnetic monopoles. c. electrons. d. protons.