As seen from the north celestial pole, the planets orbit the Sun in a counterclockwise direction.
Answer the following statement true (T) or false (F)
True
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The amount of diffraction and thus the resolution of the telescope depends upon
A) the brightness of the object. B) the size and sensitivity of the CCD chip used for imaging. C) the design of the telescope. D) whether the telescope is a reflector or refractor. E) the wavelength used and the size of the main telescope objective lens or mirror.
If a Burger’s circuit is performed around a dislocation, the Burger’s _____________closes the circuit.
Fill in the blank(s) with the appropriate word(s).
Orbital electrons do not spiral into the atomic nucleus because of
1) electrical forces, 2) the wave nature of the electrons, 3) angular momentum, 4) the discreteness of energy levels, 5) quantum mechanical laws, and the electrons have discrete radii from the nucleus because 6) the circumference of each orbit is an integral multiple of the electron wavelength. 7) electrical forces act over discrete distances. 8) energy levels themselves are discrete.
A large school district has 300 school buses. If each school bus is used 3.0 hours each day, the average speed of the school buses is 15 mi/h, and the fuel economy of the buses is 10 mi/gal
How much does it cost to run these buses for 22 school days if gasoline costs $4.10 a gallon? A) $60,000 B) $120,000 C) $180,000 D) $240,000