A long, straight wire carrying a current is placed along the y-axis
If the direction of the current is in the +y direction, what is the direction of the magnetic field due to this wire as you view it in such a way that the current is coming directly toward you? A) clockwise, around the x-axis
B) counterclockwise, around the x-axis
C) counterclockwise, around the z-axis
D) counterclockwise, around the y-axis
E) clockwise, around the y-axis
D
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The planet's orbital period is:
A) the time it takes it to rotate and have the same face toward us again. B) the time it takes to return to the same location in the sky, relative to the Sun. C) the time it takes for a satellite to orbit it. D) the time it takes for it to retrograde back to the same position as we pass it. E) the time its magnetic field takes to spin once.
Work and Power: The torque required to turn the crank on an ice cream maker is 4.50 N ? m. How much work does it take to turn the crank through 300 full turns?
A. 4240 J B. 8480 J C. 2120 J D. 1350 J E. 2700 J
Magazine paper is shiny because it is coated with clay. Why would it be wise to separate magazines from newspapers?
What will be an ideal response?
If the inductance and the capacitance both double in an LRC series circuit, the resonant frequency of that circuit will
A) decrease to one-half its original value. B) decrease to one-fourth its original value. C) decrease to one-eighth its original value. D) increase to twice its original value. E) increase to four times its original value.