The magnetic field inside a solenoid having 100 turns per cm at a current of 5.0 A is
a. 
b. 
c. 
d. 
e. 
e.
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How do scientists estimate the age of the Solar System?
A. They measure the heat content of the planets. B. They measure the ratios of radioactive elements in rocks. C. They count the number of craters on the Moon and Mercury. D. They compare the weathering of rocks on Earth with lunar rocks. E. None of these choices are correct.
The rms speed of a certain sample of carbon dioxide molecules, with a molecular weight of 44 g/mole is 396 m/s. What is the rms speed of water molecules, with a molecular weight of 18 g/mol at the same temperature?
A) 253 m/s B) 387 m/s C) 421 m/s D) 506 m/s E) 619 m/s
If the only light present is yellow, what color will a blue sweater appear to be?
A. White B. Yellow C. Blue D. Green E. Black
Which of the following stick structures could describe pentane (C5H12)?
A) a B) b C) c D) d E) none of the above