Which of the following statements is true?
a. A hot object contains a lot of heat.
b. A cold object contains only a little heat.
c. Objects do not contain heat.
d. Statements a and b are true.
c
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True or False? From the definition of capacitance C = Q/?V, it follows that an uncharged capacitor has a capacitance of zero
1.True 2.False
Surface tension is a direct result of
A) viscosity. B) Archimedes' principle. C) adhesive forces between molecules in a liquid or solid. D) cohesive forces between molecules in a liquid.
What's an isotope?
a. a radioactive material b. an atom of an element with a different number of neutrons in the nucleus c. an electrically charged atom d. none of the above
Which is more likely to cause more damage to skin - a burn caused by water at 100°C or a burn caused by steam at 100°C?
A. The burn caused by water. B. The burn caused by steam. C. There is no difference.