A scientific hypothesis can be disproved with

A) one reproducible experiment.
B) disapproval of other scientists.
C) many tests by many scientists.
D) philosophical reasoning.


Answer: A

Physics & Space Science

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Charge of uniform density 4.0 nC/m is distributed along the x axis from x = ?2.0 m to x = +3.0 m. What is the magnitude of the electric field at the point x = +5.0 m on the x axis?

A. 16 N/C B. 13 N/C C. 19 N/C D. 26 N/C E. 5.0 N/C

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A person uses corrective glasses of power -8.5 D that are worn 2.0 cm from her eye

(a) Is she nearsighted or farsighted? (b) What is her far point without glasses? What will be an ideal response?

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Magnetic fields are produced by

a. constant electric currents. b. electric currents that vary sinusoidally with time. c. time-varying electric fields. d. all of the above. e. only (a) and (b) above.

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A pan of water boils on the stove.

C. Consistent D. Inconsistent

Physics & Space Science