A uniform electric field  is present in the region between infinite parallel plane plates A and B and a uniform electric field  is present in the region between infinite parallel plane plates B and C. When the plates are vertical,

src="https://sciemce.com/media/2/ppg__cognero__Chapter_25_Gauss_apos_s_Law.__media__74c2e226-f250-4ef7-96dc-c383b4ea77d7.PNG" style="font-family:'times new roman';vertical-align:middle;" /> is directed to the right and  to the left. The signs of the charges on plates A, B and C may be

A. ?, ?, ?.
B. +, ?, ?.
C. +, ?, +.
D. +, +, +.
E. any one of the above.

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Answer: E

Physics & Space Science

Each pattern shown below would appear on a screen when monochromatic light first passes through a narrow slit of width a and then strikes a screen. The darkest areas on the page represent the brightest areas on the screen. In which case is the slit illuminated with light of the longest wavelength?

A.

A fancy sports car passes Big Ben at a speed of 0.600c. What time interval will the driver measure for a one-second interval on the large clock?

a. 1.67 s b. 0.800 s c. 1.25 s d. 0.600 s e. 1.00 s

The hottest month for interior locations in the Northern Hemisphere is ______ while the coldest month is __________.

What will be an ideal response?

A solenoid carrying an electric current, if free to rotate when placed in a magnetic field, will tend to orient its axis ________ (parallel, perpendicular, anti-parallel) to the magnetic field.

Fill in the blank(s) with the appropriate word(s).