Suppose current is flowing in a wire from right to left. Which way do the electrons in the wire move?
a. right to left
b. left to right
c. in circles
d. It is impossible to tell.
b
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A 3.0 cm tall statue is 24. cm in front of a concave mirror. The mirror radius of curvature is 20. cm
(a) Is the image real or virtual? (b) How far is the image from the mirror? (c) Is the image upright or inverted? (d) How high is the image?
The loss of oxygen or gain of electrons by an atom or ion is called ______________
Fill in the blank(s) with correct word
Three polarizing plates are to be placed along a common optical axis. The last plate is oriented so that its plane of polarization is 90° from the plane of polarization of the first plate. In between these two plates, the third plate is placed with its plane of polarization making an angle of 45° with respect to the plane for the first and last plate? If unpolarized light intensity l0 is sent
into the first of these plates, what is the intensity emerging from the last plate? In the figure, ?1 = 0°, ?2 = 45°, and ?3 = –90°.
The solar system contains no extrasolar planets
a. True b. False Indicate whether the statement is true or false