Two ropes are spliced together as shown
A short time after the incident pulse shown in the diagram reaches the splice, the rope's appearance will be that in
a.
c
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The atomic number of an atom is equal to the number of what particles in the nucleus?
A) protons B) neutrons C) nucleons D) electrons E) positrons.
Storms
a. develop as a consequence of frontal activity. b. are atmospheric disturbances. c. develop within a single air mass. d. all of the above
If the temperature of a room is 60
then what is the temperature of the room in Celsius?
A. 26.2
B. 24.0
C. 21.4
D. 19.7
E. 15.6
Transmitting power at high voltage, e.g., 400,000 V, reduces the power loss for transmission lines. But such a voltage would destroy electrical devices in household use. How then can such 400,000 V electricity be used in a normal house?
a. The ground prongs on household plugs reduce the voltage to 120 V. b. Before reaching households, transformers are used to reduce the voltage appropriately. c. No matter the incoming voltage, a 120 V device only lets 120 V in. d. The 400,000 V is just theoretical; long distance transmission lines actually use 120 V.