Which of the following objects conducts heat the best?
a. hot soup
b. the gas in...
Physics, 17.01.2020 15:31 sreeranjanig
Which of the following objects conducts heat the best?
a. hot soup
b. the gas in a hot air balloon
c. a metal spoon
d. there is no difference in the heat conduction of these items.
Answers: 2
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An alarm clock has a current of 4.5 amps and a resistance of 3.2 ohms. what is the voltage in the circuit? a.1.4 volts b.0.71 volts c.14 volts d.46 volts
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Examine the drawing of a molecule. each ring represents an atom of nitrogen (n). whatβs the chemical formula of this substance?
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Acopper sheet has a volume of 100 cmΒ³. if the density of copper is 8.9 g/cmΒ³, what is the mass of the sheet? a. 11 g b. 8.9 g c. 189 g d. 890 g
Answers: 1
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Bradley was working in the lab. he accidentally poured a container of concentrated hydrochloric acid into his container of distilled water. not thinking much of it, he continued with his work as if nothing happened. which of these would be the result of this laboratory accident? a) the water will change to a bright pink color. b) the new solution would decrease in temperature. c) the solution has now become a good conductor of electricity. d) hcl and water have the same chemical and physical properties, so nothing would happen.
Answers: 2
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