What is the name of the following compound?
CaCl2
A) calcium chloride
B) carbon chloride
C) dichlorocalcium
D) calc two
E) dicalcium chloride
Answer: A
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A 5.0-g particle moving 60 m/s collides with a 2.0-g particle initially at rest. After the collision each of the particles has a velocity that is directed 30° from the original direction of motion of the 5.0-g particle. What is the speed of the 2.0-g particle after the collision?
a. 72 m/s b. 87 m/s c. 79 m/s d. 94 m/s e. 67 m/s
A parallel plate capacitor is charged to voltage V and then disconnected from the battery. Leopold says that the voltage will decrease if the plates are pulled apart. Gerhardt says that the voltage will remain the same. Which one, if either, is correct, and why?
a. Gerhardt, because the maximum voltage is determined by the battery. b. Gerhardt, because the charge per unit area on the plates does not change. c. Leopold, because charge is transferred from one plate to the other when the plates are separated. d. Leopold, because the force each plate exerts on the other decreases when the plates are pulled apart. e. Neither, because the voltage increases when the plates are pulled apart.
Explain how the pulse-echo technique works for medical imaging
What will be an ideal response?
The gamma rays created in the Sun's core move freely through the ________ zone
Fill in the blank(s) with correct word