A 3.0-mF capacitor charged to 40 V and a 5.0-mF capacitor charged to 18 V are connected to each other, with the positive plate of each connected to the negative plate of the other. What is the final charge on the 3.0-mF capacitor?
a. 11 mC
b. 15 mC
c. 19 mC
d. 26 mC
e. 79 mC
A
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Constant Acceleration Kinematics: A train starts from rest and accelerates uniformly until it has traveled 2.1 km and acquired a forward velocity of 24 m/s. The train then moves at a constant velocity of 24 m/s for 400 s. The train then slows down uniformly at 0.065 m/s2, until it is brought to a halt. The distance traveled by the train while slowing down is closest to
A. 4.4 km. B. 4.2 km. C. 4.0 km. D. 3.8 km. E. 3.6 km.
Most interstellar clouds remain stable in size because the force of gravity is opposed by ________ within the cloud
A) degeneracy pressure B) radiation pressure C) stellar winds D) thermal pressure
A perfectly opaque object that absorbs all radiation and reemits the absorbed energy as thermal radiation is
A) a hot, dense cloud of gas. B) a cold, dense cloud of gas. C) an infrared radiation emitter. D) a thermal emitter. E) transparent.
In the Big Bang, about 75% of the normal matter by mass was hydrogen atoms, and the other 25% almost entirely helium
Indicate whether the statement is true or false