Suppose that you were selected for a "Survivor"-type TV show. To help keep your group connected, you suggest that long vines can be tied together and used to transmit signals in cases of emergency. To get the signals to travel faster, you should
a. select lighter vines.
b. increase the tension on the vines.
c. hang weights from the vines at evenly spaced intervals.
d. do all of the above.
e. do (a) or (b) above, preferably both.
e
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The amount of energy emitted by a star each second is the ________ and is measured in ________.
A. apparent brightness; degrees K B. apparent brightness; watts C. luminosity; watts D. temperature; degrees K
A force that determines the chemical properties of an atom is
A) a friction force. B) a nuclear force. C) a gravitational force. D) an electrical force. E) none of the above
Which plates are causing the formation of the Andes mountains in western South America? Describe their motions
What will be an ideal response?
A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x = 10 cm. Its position 7.0 s later is x = ?30 cm. What is the acceleration of the particle?
a. ?7.3 cm/s2 b. ?8.9 cm/s2 c. ?11 cm/s2 d. ?15 cm/s2 e. ?13 cm/s2