Quantum mechanics is
A) a branch of physics that applies on very small scales.
B) the idea that mechanics can be understood only if we first understand quantums.
C) the idea that quantitative methods are needed to understand physics.
D) a branch of physics that deals with the curvature of spacetime.
E) a branch of physics that deals with the properties of gases.
A
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Nuclear waste is placed in drums 50 cm in diameter by 100 cm long and buried in sand. Water lines are buried adjacent to the drums to keep them cool. The suggested typical arrangement is shown in Figure 2-57. Estimate the heat transfer between a drum and the water line.
___________ are produced when two galaxies pass near each other and pull large streamers of stars, gas, and dust away from the galaxies
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A boat has a velocity 12. km/hr Southward and 16. km/hr Westward. What is its speed and how long does it take to travel 94. km?
What will be an ideal response?
The 2.4-m diameter Hubble space telescope has been placed into Earth orbit by the space shuttle. Assuming a wavelength of 710 nm, what angular resolution could this telescope achieve by Rayleigh's criterion? (1 nm = 10-9 m)
a. 5.7 × 10^-6 rad c. 3.6 × 10^-7 rad b. 7.5 × 10^-6 rad d. 2.5 × 10^-7 rad