A flashlight draws 0.133 A from a 3.0-V battery pack. In 2.0 minutes
(a) how much charge flows from the battery, (b) how much energy does the battery supply, and (c) how many electrons have passed any point in the circuit every second?
(a) 16 C (b) 48 J (c) 8.3 × 1017
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____________________ are groups of 100,000 to 1,000,000 population II stars firmly bound by gravity
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A neutral hollow spherical conducting shell of inner radius 1.00 cm and outer radius 3.00 cm has a +2.00-µC point charge placed at its center. Find the surface charge density (a) on the inner surface of the shell. (b) on the outer surface of the shell
What will be an ideal response?
An ideal solenoid having a coil density of 5000 turns per meter is 10 cm long and carries a current of 4.0 A. What is the strength of the magnetic field at its center?
A) 13 mT B) 3.1 mT C) 6.2 mT D) 25 mT
A laminar flow is desired from a tank with a well-rounded entrance to a 6-mm-diameter pipe that drains the tank. A container catches 20 L of 20°C water in 4 minutes. Determine the Reynolds number so one can decide if the flow is laminar.
(A) 972 (B) 1220 (C) 1770 (D) 1920