Which of the following objects would be most likely to produce an emission-line spectrum?

A) a star like our Sun B) a light bulb C) the Earth D) a neon light


D

Physics & Space Science

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Electricity from a AAA battery costs the consumer about

A. 1 ¢ per kilowatt-hour B. 10¢ per kilowatt-hour C. $1 per kilowatt-hour D. $1000 per kilowatt-hour

Physics & Space Science

As a result of friction between internal parts of an isolated system

a. the total mechanical energy of the system increases. b. the total mechanical energy of the system decreases. c. the total mechanical energy of the system remains the same. d. the potential energy of the system increases but the kinetic energy remains the same. e. the kinetic energy of the system increases but the potential energy of the system remains the same.

Physics & Space Science

The sum of the kinetic and potential energy is equal to the _____________energy.

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

Electrostatics is a branch of electricity that focuses on

A) electrical charge. B) electrical force. C) both of these when static. D) none of the above

Physics & Space Science