What is the de Broglie wavelength of a ball of mass 200. g moving with a speed of 30. m/s?
A) 1.1 × 10-34 m
B) 4.5 × 10-28 m
C) 6.67 × 10-28 m
D) 2.2 × 10-34 m
E) 6.67 × 10-31 m
A
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Answer the following statement true (T) or false (F)
The power dissipated in a 4-ohm resistor carrying 3 A is
A) 7 W. B) 18 W. C) 36 W. D) 48 W. E) not enough information
The diffraction-limited resolution of a 10-meter telescope is about 0.01 arcsecond for visible light
Would you expect the actual angular resolution of a Keck 10-meter telescope in Hawaii to be better than, equal to, or worse than 0.01 arcsecond? Explain.
A refrigerator has an interior volume of 0.500 m3. The temperature inside the refrigerator in 282 K, and the pressure is 101 kPa. If the molecular weight of air is 29 g/mol, what is the mass of air inside the refrigerator? (R = 8.31 J/mol × K)
A) 625 g B) 513 g C) 447 g D) 329 g E) 243 g