A laser emits monochromatic and coherent light
Indicate whether the statement is true or false
T
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The age of our solar system is approximately
A) 10,000 years. B) 3.8 million years. C) 4.5 million years. D) 4.5 billion years. E) 14 billion years.
A boat has an initial velocity of 2 m/s in the y direction on a stream which is moving in the x direction at 1 m/s. The boat is accelerating in its direction of motion at 1 m/s2. What is the acceleration of the boat (in m/s2) relative to the water?
A.
B.
C.
+ 
D.
? E.
The oldest objects found so far in our solar system are Earth rocks that are 3.9 billion years old
Indicate whether the statement is true or false
Notice that the parallax is greater (the apparent movement is larger) for the person than for the trees, and that the mountains do not appear to shift at all. Why?
A. The amount of parallax depends on an object's size, with greater parallax for larger objects. B. The amount of parallax depends on an object's size, with greater parallax for smaller objects. C. The amount of parallax depends on an object's distance, with greater parallax for more distant objects. D. The amount of parallax depends on an object's distance, with greater parallax for nearer objects.