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A person enters a tall tower, needing to know it's height. He notes that a long pendulum extends from the ceiling almost to the floor and that its period is 14.2 s.
(a) If this pendulum is taken to the Moon, where the free-fall acceleration is 1.67 m/s2 what is it's period there?
s
(b) How tall is the tower?
m
You charge an initially uncharged 79.9-mF capacitor through a 48.1 Ohm resistor by means of a 9.00-V, What is the charge after a long time (coloumbs)
A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 5.00 g coins stacked over the 6.0 cm mark, What is the mass of the meter stick
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a mine car mass 474 kg rolls at a speed of 0.368 ms on a horizontal track as the drawing shows. a 103-kg chunk of coal
A 3.1-cm-diameter parallel-plate capacitor has a 2.2mmspacing. The electric field strength inside the capacitor is 1.3×105V/m. What is the potential difference across the capacitor
although the evidence is weak there has been concern in recent years over possible health effects from the magnetic
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solar cells are often coated with a transparent thin film of silicon monoxide sio n 1.45 to minimize re?ective losses
The area of a typical eardrum is about 5.0x10?5 m2. What is the sound power (energy per second) incident on the eardrum at the threshold of hearing
A transformer consists of two coils of wire wound on a common toroidal iron core. What is the induced emf in the second coil
A 3.0 m long wire carrying a current of 1.0 A through amagnetic field of magnitude 10.0T experiences a force of 4.0kN entirely due to the current passing through the magnetic field
Block A of Figure has a velocity of 15 ft/sec down slope. How far will the block slide along the slope? How far will the block slide along the slope before stopping?
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