A 0.16-pF parallel-plate capacitor is charged to 10 V. Then the battery is disconnected from the capacitor. When 1.00 × 10^7 electrons are now placed on the negative plate of the capacitor, the voltage between the plates changes by
a. ?5.0 V.
b. ?1.1 V.
c. 0 V.
d. +1.1 V.
e. +5.0 V.
e
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Which of the following statements about the atomic theory of matter is true?
Two pipe columns are required to have the same Euler buckling load Pcr. Column 1 has flexural rigidity EI1 and height L; column 2 has flexural rigidity (2/3) EI2 and height L. The ratio (I2/I1) at which both columns will buckle under the same load is approximately:
(A) 0.8
(B) 1.0
(C) 2.2
(D) 3.1
A small source radiates an electromagnetic wave with a single frequency into vacuum, equally in all directions. As the wave moves, its frequency:
1.increases. 2.decreases. 3.stays constant.
Projectile Motion: A projectile is fired from ground level at an angle above the horizontal on an airless planet where g = 10.0 m/s2. The initial x and y components of its velocity are 86.6 m/s and 50.0 m/s respectively. How long after firing does it take before the projectile hits the level ground?
A. 5.00 seconds B. 10.0 seconds C. 15.0 seconds D. 20.0 seconds