Stars swell into giants when hydrogen is exhausted in their centers
Indicate whether the statement is true or false
T
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The brilliant nuclei of Seyfert galaxies change brightness rapidly, in only a few hours or minutes, especially at _____
A) microwave wavelengths B) visible light wavelengths C) gamma ray wavelengths D) X-ray wavelengths
The formation of our _______________ occurred about 4.6 billion years ago
Fill in the blank(s) with correct word
A 2.0-kg block slides down a frictionless incline from point A to point B. A force (magnitude P = 3.0 N) acts on the block between A and B, as shown. Points A and B are 2.0 m apart. If the kinetic energy of the block at A is 10 J, what is the kinetic energy of the block at B?
A. 27 J B. 20 J C. 24 J D. 17 J E. 37 J
Parallel-Plate Capacitor: A battery charges a parallel-plate capacitor fully and then is removed. The plates are then slowly pulled apart. What happens to the potential difference between the plates as they are being separated?
A. It increases. B. It decreases. C. It remains constant. D. It cannot be determined from the information given.