Two parallel wires are each carrying 10 A and are separated by 4.0 m. If the currents are in opposite directions, what is the magnitude of the magnetic field halfway between them?
A. 0.0
B. 1.0
T
C. 2.0T
D. 4.0T
E. 1.4T
C. 2.0T
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A ball is rolled up an incline so that it goes part-way up and then rolls back down. Which of the graphs below could represent its velocity vs. time from the instant it is released until it returns to where it started?
Which of the following aberrations does not apply to mirrors?
A) astigmatism B) chromatic C) spherical D) coma
A 7.0-?C charge is placed at the origin and a second charge is placed on the x-axis at x = 0.3 m. If the resulting force on the second charge is 6.9 N in the positive x-direction, what is the force on the charge at the origin?
a. 6.9 N in the positive x-direction b. 6.9 N in the negative x-direction c. 0 N d. not able to be determined until the second charge is known e. 6.9 N in the negative y-direction
In order to conserve fuel, you modify your car by removing 100 kg of excess weight. How much energy is saved each time you accelerate from 0 to 100 km/hr (62 mph)?
A. 
B. 
C. 
D. 