The equivalent capacitance of the circuit shown below is
a.
0.2 C.
b.
0.4 C.
c.
1 C.
d.
4 C.
e.
5 C.
d
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The mass of a mass-and-spring system is displaced 10 cm from its equilibrium position and released. A frequency of 4 Hz is observed. What frequency would be observed if the mass had been displaced only 5 cm and then released?
A) 8 Hz B) 4 Hz C) 6 Hz D) 2 Hz
Image height divided by object height gives __________
Fill in the blank(s) with correct word
Two identical spheres each carry a charge of ?82.0 µC. The spheres are separated by a distance of 2.00 m. What is the electric force between the spheres? (ke = 8.99 × 10^9 N·m2/C2)
a. 0.184 N (repulsive) b. 15.1 N (repulsive) c. 30.2 N (attractive) d. 1.47 N (attractive) e. 37.8 N (attractive)
As comets approach and move around the Sun, the coma and the tail ______________ in size
a. decrease b. increase c. remain the same d. none of the above