Where do volcanoes form?
What will be an ideal response?
Hot spots, divergent boundaries and subduction zones
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Resolution: A camera used for aerial mapping has a lens with a 30-cm diameter maximum aperture and a 42-cm focal length. Light of 550 nm wavelength is used to form the image. Assuming that the resolution of the camera is limited only by diffraction, what is the smallest angle (in milliradians) subtended by an object on the ground that can be resolved by this camera at maximum aperture?
A. 1.6 mrad B. 2.2 mrad C. 3.2 mrad D. 4.5 mrad E. 6.3 mrad
Force on a Wire: For the horseshoe magnet shown in the figure, the left end is a north magnetic pole and the right end is a south magnetic pole. When the switch is closed in the circuit, which way will the wire between the poles of the horseshoe magnet initially deflect?
A. to the right B. to the left C. upward D. downward
A 50.00 ml sample of mercury at room temperature (293.0 K) is cooled. What is the volume of the sample when the mercury reaches 273.0 K? The coefficient of volume expansion of mercury is 182.0 x 10-6 K-1.
A. 49.39 ml B. 49.94 ml C. 49.82 ml D. 48.18 ml E. 49.96 ml
A car traveling at 100 km/h strikes an unfortunate bug and splatters it. The force of impact is
A) greater on the bug. B) greater on the car. C) the same for both.