Two copper wires have electric fields with identical strengths in their interior directed along the wire. Wire 1 has twice the diameter of wire 2. How do the currents carried by the wires compare?
A. 
B. 
C. 
D. 
E. 
F. We can’t compare using only the given information.
A.
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Give two reasons why summer days are warmer than winter days
What will be an ideal response?
The image of a plant is 4.0 cm from a concave spherical mirror having a radius of curvature of 10 cm. Where is the plant relative to the mirror?
A) 2.2 cm in front of the mirror B) 20 cm in front of the mirror C) 4.4 cm in front of the mirror D) 1.0 cm in front of the mirror E) 9.0 cm in front of the mirror
A sample of water has a mass of 10.0 grams. What is the number of molecules of water in the 10.0 gram sample (H = 1u, O = 16u)?
a. 
b. 
c. 
d. 
e. 
Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 4sin(5x)cos(6t) where x is in m and t is in s. What is the approximate frequency of the interfering waves?
a. 3 Hz b. 1 Hz c. 6 Hz d. 12 Hz e. 5 Hz