Two balls are thrown from the top of a building. One is thrown up and the other is thrown down, both with the same initial speed. What are their speeds when they hit the street?
A. they are traveling at the same speed
B. the one thrown down is traveling faster
C. the one thrown up is traveling faster
D. it depends on the height of the building
A. they are traveling at the same speed
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A partial, or detached, segment of a spiral arm is referred to as a(n) " _______________."
Fill in the blank(s) with correct word
Consider the segment of cylindrical metal wire shown below. Note that the drift speed of electrons is increasing in the wire as we move to the right. Assume that charge cannot move off the wire. The total charge between the two cross-sectional areas A and B is
A. Increasing.
B. Decreasing.
C. Remaining the same.
The Earth's lithosphere
A) is the same as the crust. B) consists of the crust and the asthenosphere. C) is the same as the mantle. D) consists of the crust and the uppermost part of the mantle.
The sweep technique used in SETI programs is also known as a
A) targeted search B) intentional search C) sky survey D) random search