Conservation of Momentum: Two friends are standing on opposite ends of a canoe that is initially at rest with respect to a frictionless lake. The person in the front throws a very massive ball toward the back, and the person in the back catches it. After the ball is caught, the canoe is
A. moving backward.
B. stationary.
C. moving forward.
Answer: B
Physics & Space Science
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When a pair of 1-ohm resistors are connected in series, their equivalent (combined) resistance is 2 ohms, and when connected in parallel is
A) ½ ohm. B) none of the above C) also 2 ohms.
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The light curve of a/an ___________ binary can reveal both masses and diameters of the stars
Fill in the blank(s) with correct word
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A photon is a particle with positive charge
Indicate whether the statement is true or false
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A transformer is to be designed to increase the 27-kV (rms) output of a generator to the transmission line voltage of 346 kV (rms). If the primary winding has 95 turns, how many turns must the secondary have?
a. 7 b. 15600 c. 1217 d. 26 e. 4358
Physics & Space Science