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Which statement best explains why ice is a good refrigerant?
Bats, which are nocturnal, can fly swiftly in the dark without bumping to a barrier. This is because _____.
Which of the following statements is true for both sound and light waves?
Where does visible light fall in the electromagnetic spectrum?
What kind of mirror is best used as side mirrors in cars?
An object becomes positively charge if it _____.
Which of the following equations shows the relationship between the current and voltage when resistance remains constant?
If three light bulbs of different wattages are connected in series to a battery, which of the following will be true?
The force that holds the atoms and molecules together to form larger bodies is known as _____.
A radioactive sample has a mass of 15 grams, and its half-life is 10 days. What mass of the original sample remains after 20 days?