A 0.40 H inductor has a current that rises from zero to 3.0 A in 6.0 s. What is the average power required to accomplish this?
A. 15 W
B. 9.0 W
C. 1.5 W
D. 0.60 W
E. 0.30 W
E. 0.30 W
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Given that organic molecules need to react in order to produce life, this suggests we should search for worlds in the solar system that have
A) either an atmosphere, or a surface or subsurface liquid medium such as water, or both. B) organic molecules on their surfaces C) an atmosphere D) rocky surfaces
An antinode in a standing wave is the location that appears to ________ (describe behavior) from equilibrium.
What will be an ideal response?
A strobe photograph shows equally spaced images of a car moving along a straight road. If the time intervals between images is constant, which of the following cannot be positive?
a. the speed of the car c. the acceleration of the car b. the average velocity of the car d. the direction of motion of the car
How do earthquake-generated waves help scientists deduce the internal structure of Earth?
A. Secondary waves are detected at a seismometer when they pass through solid materials. B. The path of waves bends as they travel through material of different density. C. Primary waves are detected at a seismometer when they pass through solid or liquid materials. D. Earthquake-generated waves can be detected and studied anywhere in the world. E. All of these choices are correct.