The energy stored in a capacitor will be equal to the work done to charge it
Indicate whether the statement is true or false
TRUE
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In their attempt to gauge the true shape of our Galaxy, the Herschels concluded that:
A) our Galaxy has a hexagonal shape. B) the Sun is the only luminous star in our Galaxy. C) the Sun and Earth are near the edge of our Galaxy. D) our Galaxy has some noticeable holes lacking stars around its edges.
Series/Parallel Circuits: If 1.5 A flows through R2, what is the emf V of the ideal battery in the figure?
A. 150 V B. 75 V C. 60 V D. 30 V
A 40-?C charge is positioned on the x axis at x = 4.0 cm. Where should a ?60-?C charge be placed to produce a net electric field of zero at the origin?
A. ?5.3 cm B. 5.7 cm C. 4.9 cm D. ?6.0 cm E. +6.0 cm
A car of mass M, traveling with a velocity V, strikes a parked station wagon, whose mass is 2M. The bumpers lock together in this head-on inelastic collision. What fraction of the initial kinetic energy is lost in this collision?
A) 1/4 B) 1/9 C) 1/2 D) 2/3 E) 1/3