Question
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Osmium has atomic number 76. A Particular isotope of osmium has an atomic mass of 191.961 u. Which symbol correctly represents this isotope? Some light bulbs are connected in parallel to a 120 V source as shown in the figure. Each bulb dissipates an average power of 60 W. The circuit has a fuse F that bums out when the current in the circuit exceeds 9 A. Determine the largest number of bulbs, which can be used in this circuit without burning out the fuse. 9 17 25 34 36 An FM radio station broadcasts at 98.6 MHz. What is the wavelength of the radiowaves? 60.8 m 6.08 m 3.04 m 0.314 m 0.33 cm How many photons of light does a 60 Watt light bulb produce per second, at the wavelength 5550 A. if efficiency is 2.1 % 3.6 Times 1016 3.6 Times 1014 6.0 Times 1018 3.6 Times 1018 3.6 Times 1012
Explanation / Answer
10)B 11)D 12)C 13)C
