The most likely method of interstellar communication is similar to which type of communication on Earth?
A) sign language
B) telepathy
C) Morse code
D) the spoken word
C
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John says that the value of the function cos[?(t + T) + ?], obtained one period T after time t, is greater than cos(?t + ?) by 2?. Larry says that it is greater by the addition of 1.00 to cos(?t + ?). Which one, if either, is correct?
A. John, because ?T = 2?. B. John, because ?T = 1 radian. C. Larry, because ?T = 2?. D. Larry, because ?T = 1 radian. E. Neither, because cos(? + 2?) = cos?.
A unique property of water is that it ____
a. has a high heat capacity b. can easily expand c. has a high oxygen capacity d. easily absorbs carbon monoxide e. can mix with organic lipids
One similarity between electrons and photons is
A) both are the quanta of a field. B) both are particles of matter. C) Both of the above. D) both are forms of radiation. E) None of the above.
A point on the string of a violin moves up and down in simple harmonic motion with an amplitude of 1.24 mm and a frequency of 875 Hz
(a) What is the maximum speed of that point in SI units? (b) What is the maximum acceleration of the point in SI units?