Which of these gases is least abundant in our atmosphere?
A) hydrogen
B) nitrogen
C) argon
D) oxygen
E) carbon dioxide
A
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Solenoid: An ideal solenoid having a coil density of 5000 turns per meter is 10 cm long and carries a current of 4.0 A. What is the strength of the magnetic field at its center?
A. 3.1 mT B. 6.2 mT C. 13 mT D. 25 mT
Global climate change has been suggested as a reason for societal changes or collapses in several instances. Why should drought or other climate-induced change cause social change? Explain how this could possibly occur
What will be an ideal response?
Kirchhoff's Rules: A multiloop circuit is shown in the figure, but some quantities are not labeled. Find the current I2 if the batteries are ideal. (It is not necessary to solve the entire circuit.)
A. +0.1 A B. +0.3 A C. +0.5 A D. -0.1 A E. -0.3 A
The maximum intensity using coherent sources compared to the maximum intensity using random sources for sources of equal strength is that the maximum in the coherent case is
A) 0.707 times the incoherent. B) triple the incoherent. C) the same as the incoherent. D) half the incoherent. E) double the incoherent.