A high tide is occurring at Charleston, South Carolina (80°W, 33°N). What two longitudes are experiencing low tide?
10°E and 170°W
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Silver contains 
conduction electrons per m3. How many conduction electrons are in a 1.0 m length of silver wire of diameter 2.6 mm?
a. 
b. 
c. 
d. 
e. 
Burl and Paul have a total weight of 1300 N. The tensions in the supporting ropes that support their scaffold add to 1700 N. The weight of the scaffold itself must be
A) 300 N. B) 400 N. C) 500 N. D) 600 N.
The Luyten 726-8 binary system is approximately 9 light-years away. If we send a spacecraft to visit this system traveling at 90% of the speed of light, how long will a one- way trip take as measured from the Earth?
A) it's impossible to tell unless we know the spacecraft's method of propulsion B) more than 10 years C) 10 years D) less than 10 years
The sum of the kinetic energy and potential energy is called ______________ energy
Fill in the blank(s) with correct word