While studying some sedimentary rocks in your field area, you find a mineral with rhombohedral cleavage that reacts with hydrochloric acid. You determine that this mineral is:
-muscovite.
-calcite.
-olivine.
-quartz.
-gypsum.
-calcite.
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Energy and Mass: One of the first atomic explosion released approximately 1.0 × 1014 J of energy. How much matter had to be changed into energy to produce this yield? (c = 3.0 × 108 m/s)
A. 1.1 g B. 23 g C. 13 g D. 0.45 kg E. 1.1 kg
A 55-kg box rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.30. A horizontal 140-N force is applied to the box. What is the friction force on the box?
A) 140 N B) 42 N C) 16.5 N D) 160 N E) 0.00 N
A horizontal wire carries a current straight toward you. From your point of view, the magnetic field at a point directly below the wire points
A) directly away from you. B) to the left. C) to the right. D) directly toward you. E) vertically upward.
Which of Jupiter's moons is believed to be covered with water ice and possibly have life sustaining conditions?
a. Io b. Europa c. Ganymede d. Callisto