How many atoms are there in a face centered cubic unit cell that has an atom at 0, 0, 0?
What will be an ideal response?
The atoms at each of the eight corners of the cube contribute 1/8 of an atom to the unit cell for a total of one atom contributed by the corner atoms of the cube.
The atom at the face centered position of each face is 1/2 in the unit cell, and there are 6 faces for a total of 3 atoms contributed by the 6 face centered atoms. The total number of atoms in the unit cell is 3+1 for a total of 4.
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Graphical Analysis: The graph in the figure represents the velocity of a particle as it travels along the x-axis. What is the average acceleration of the particle between t = 2.0 s and t = 4.0 s?
Fill in the blank(s) with the appropriate word(s).
Answer the following statement(s) true (T) or false (F)
1. A car moves backward 10 m in 2 s at a steady rate. The car’s speed is therefore –5 m/s. 2. An object is moving at a constant velocity. This means that an interaction must be delivering momentum to the object at a constant nonzero rate. 3.A bicyclist rounding a curve at a constant speed is receiving a nonzero net flow of momentum. 4. A human being’s weight could be 150 kg. 5. Suppose a moving cart (cart A) hits an identical cart (cart B) at rest. Cart B remains at rest after the collision, and cart A rebounds with a speed equal to its original speed. Cart B must have participated in some other interaction during the collision process,
Some of Earth's artificial satellites orbit in the
a. stratosphere. b. troposphere. c. mesosphere. d. thermosphere. e. exosphere.
What would happen if you hung so much mass on the spring that it exceeded the spring's elastic limit?