The potential difference between the terminals of a battery, when no current flows to an external circuit, is referred to as the

A)

emf.
B)

terminal voltage.


A

Physics & Space Science

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Indicate whether the statement is true or false

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For which of the graphs was the result most curved, and closest to the one we are familiar with for the planet orbits about the Sun?

A.) 0%. B.) 25%. C.) 50%. D.) 75%. E.) 100%.

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The entanglement experiment described in the textbook demonstrates that

A) any reduction of a particle's position uncertainty is accompanied by an increase in its velocity uncertainty, as predicted by quantum theory. B) a particle's energy is not continuous but is instead quantized in specific, discrete "bundles." C) any attempt to observe which slit a particle goes through, in the electron double-slit experiment, causes the interference pattern to switch to a non-interference pattern. D) two separated particles can exhibit instantaneous non-local connections, as predicted by quantum theory. E) quantum theory's prediction of instantaneous non-local connections between separated particles is incorrect.

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A 15-kg child is sitting on a playground teeter-totter, 1.5 m from the pivot. What is the minimum distance, on the other side of the pivot, such that a 220-N force will make the child lift off the ground?

A) 2.4 m B) 0.10 m C) 1.5 m D) 9.8 m E) 1.0 m

Physics & Space Science