The most abundant rocks in Earth's crust are the
a. sulfides.
b. oxides.
c. carbonates.
d. silicates.
d
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Most of the carbon dioxide on the Earth
A) is dissolved in the oceans, forming carbonate rocks B) has frozen out in the polar regions C) has escaped into space D) is still present in the atmosphere
In an inelastic collision involving an isolated system, the final total momentum is
A) exactly the same as the initial momentum. B) more than the initial momentum. C) less than the initial momentum.
Briefly describe how an impact could lead to a mass extinction
What will be an ideal response?
A wire of thickness d = 5 mm is tightly wound 200 times around a cylindrical core to form a solenoid. A current I = 0.1 A is sent through the wire. What is the the magnetic field on the axis of the solenoid?
A) 6.6 × 10-5 T B) 2.5 × 10-5 T C) 1.3 × 10-5 T D) 3.6 × 10-5 T E) 9.8 × 10-5 T