Three capacitors, of capacitance 5.00 ?F, 10.0 ?F, and 50.0 ?F, are connected in series across a 12.0-V voltage source. (a) How much charge is stored in the 5.00-?F capacitor? (b) What is the potential difference across the 10.0-?F capacitor?
What will be an ideal response?
Answer: (a) 37.5 µC (b) 3.75 V
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How does the energy of the cosmic microwave background compare to the energy radiated by all the stars and galaxies that ever existed?
A) They are very close to being equal. B) 73% cosmic background, 27% starlight. C) About ten times more from the Big Bang than from stars and galaxies. D) The starlight now dominates the background, as your eyes show clearly. E) We have no way of comparing matter and energy this way.
How many arcseconds are in 1°?
A) 60 B) 360 C) 3,600 D) 100 E) 10,000
A car moving at 10.0 m/s encounters a bump that has a circular cross-section with a radius of 30.0 m. What is the normal force exerted by the seat of the car on a 60.0-kg passenger when the car is at the top of the bump?
A) 200 N B) 389 N C) 789 N D) 489 N E) 589 N
A U-tube with a cross-sectional area of 1.00 cm2 is open to the atmosphere at both ends. Water is poured into the tube until the water rises part-way along the straight sides,
and then 5.00 cm3 of oil is poured into one end. As a result, the top surface of the oil ends up 0.550 cm higher than the water surface on the other side of the U. What is the density of the oil?