Jupiter is largest and brightest in our skies when seen at ________
Fill in the blank(s) with correct word
opposition
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A 3.0-kg block is dragged over a rough horizontal surface by a constant force of 16 N acting at an angle of 37° above the horizontal as shown. The speed of the block increases from 4.0 m/s to 6.0 m/s in a displacement of 5.0 m. What work was done by the friction force during this displacement?
A. ?34 J B. ?64 J C. ?30 J D. ?94 J E. +64 J
What causes spherical aberration?
A. the lens surface is not perfectly smooth B. the outer edges of the lens produce a focus at a different point than the central rays C. light is an electromagnetic wave with intrinsic diffraction properties D. the absorption of light in the glass is a function of wavelength
Sunspots are known to be magnetic phenomena because
a. Doppler shifts in spectral lines are observed. b. the Zeeman effect is observed in sunspots. c. collisional broadening is observed in spectral lines. d. infrared observations indicate that the sunspots are cooler than their surroundings. e. observations during eclipses reveal a very extensive photosphere.
A uniform solid sphere rolls without slipping along a horizontal surface. What fraction of its total kinetic energy is in the form of rotational kinetic energy about the CM?