Which one of the choices below represents the preferred practice regarding significant figures when multiplying the following: 10.5 × 8.9 × 3.11?

a. 290.6295
c. 291
b. 290.63
d. 290


D

Physics & Space Science

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The neutral hydrogen atom consists of

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An ideal fluid, of density 0.90 × 103 kg/m3, flows at 5.0 m/s through a level pipe with radius of 0.5 cm. The pressure in the fluid is 1.3 × 105 N/m2. This pipe connects to a second level pipe, with radius of 1.6 cm. Find the speed of flow in the second pipe.

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The reflection of light from a rough surface is called specular reflection

Indicate whether the statement is true or false

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When a charged particle is moved along an electric field line,

a. the electric field does no work on the charge. b. the electrical potential energy of the charge does not change. c. the electrical potential energy of the charge undergoes the maximum change in magnitude. d. the voltage changes, but there is no change in electrical potential energy. e. the electrical potential energy undergoes the maximum change, but there is no change in voltage.

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