The magnetic field unlike the electric field is continuous
Indicate whether the statement is true or false
TRUE
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Even though the heliocentric model of Copernicus had many advantages over the Ptolemaic model, it suffered from the assumption that the
A) planets moved in ellipses about the Sun B) planets moved in perfect circles about the Sun C) planets moved in perfect circles about the Earth D) Earth was not rotating on its axis
A runner generates 1260 W of thermal energy. If this energy has to be removed only by evaporation, how much water does this runner lose in 15 minutes of running? The latent heat of vaporization of water is 22.6 × 105 J/kg
A) 50 g B) 500 g C) 35 g D) 350 g E) 40 g
The characteristic rotational energy, h2/8?2I, for O2 is 2.9 × 10-23 J. Calculate the O2 bond length
A) 3.6 × 10-10 m B) 0.60 × 10-11 m C) 1.2 × 10-10 m D) 0.30 × 10-11 m E) 2.4 × 10-10 m
Camera Exposure: The focal length of a camera lens is 40 mm and its aperture diameter is 10 mm. What is the f-number of this lens?
A. 4.0 B. 2.0 C. 5.6 D. 0.25 E. 0.40