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.

Physics & Space Science

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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

Physics & Space Science

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.

Physics & Space Science

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

Physics & Space Science

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

Physics & Space Science