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A series combination of four identical resistors is across a battery. The potential difference across each resistor is 2.0V, and the circuit current is 0.22A. a) Find the value of each resistor. Express your answer to three significant figures and include the appropriate units. b) Find the battery emf. Express your answer to two significant figures and include the appropriate units.
A parallel-plate capacitor in air has a plate separation of 1.42 cm and a plate area of 25.0 cm2. What is the change in energy of the capacitor
A man enters a tall tower, needing to know its height. Henotes that a long pendulum extends from the ceiling almost to thefloor and that its period is 25.0 s. How tall is the tower
A spider hangs from a strand of silk whose radius is5.8x10-6 m. The density of the silk is 1100kg/m3. When the spider moves, waves travel along thestrand of silk at a speed of 310 m/s. Determine the mass of the spider.
Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 5.00 m. What is the frequency of the sound
An aluminum cup of mass 200 g contains 800 g of water in thermal equlibrium at 80.0c. the combination of cup and water is cooled unformly so that temperature decreases by 1.50c per minute. at what rate is energy being removed by heat.
question1a bolt drops from the ceiling of a train car that is accelerating northward at a rate of 3.50 ms2.a what is
If a person on a diet losses 1.710 Kg in a week. Ignoring thesmall contribution that leap year adds to each week, determine how many micro grams per second are lost
find a horizontal force needed to pull a mass of 500 gram at constant velocity on a level surface and µk = 0.3?
Two conductors having net charges of +13.0 µC and -13.0 µC have a potential difference of 13.0 V between them. Determine the capacitance of the system
The work function for cesium, 1.81 eV, is much lower than the work function for other metals. What is the photoelectric cut-off wavelength
A 70.0 kg construction worker stands at the far end of the beam. What is the magnitude of the torque about the point where beam is bolted into place.
An old oaken bucket of mass 6.75 kg hangs in a well at the end of a rope. The rope passes over a frictionless pulley at the top of the well, How much work does gravity do on the bucket
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