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A small power plant produces a voltage of 6kV and 150A. the voltage is stepped up to 240kV by a transformer before it is transmitted to a substation. The resistence of the transmission line between the power plant and substation is 75 ohm
a. What is the current in the transmission line from the plant to the substation?
b. What % of the power produced is lost in transmission to the substation?
A 36g glass thermometer reads 20.6C before it is placed in 104mL of water. What is the original temperature of the water
A massless frictionless pulley, an ideal string, and two masses (m1 = 2.50 kg and m2 = 4.00 kg) are connected together, What is the magnitude of the tension force in the string
A transverse traveling wave on a cord is represented by D = 0.25 sin (6.8x + 28t) where D and x are in meters and t is in seconds. Determine maximum and minimum speeds of particles of the cord
A cannon ball is fired horizontally with a velocity of 600 m/s from the top of a cliff 1000 m high.
a roller coaster had an intial velocity of 80 ms and abruptly came to a stop at the end of the ride. it took 10 seconds
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An artificial satellite circles the Earth in a circular orbit at a location where the acceleration due to gravity is 4.50 m/s2
26 g of copper pellets are removed from a 300 degree Celsius oven and straight away dropped into 116 mL of water at 25 degree Celsius in an insulated cup. What will the new water temperature be.
What are the maximum and minimum inductance, Lmax and Lmin, that define the range of inductance that is safe to use if the capacitor voltage is not to exceed 145V
In 1994, Susan Williams of California blew a bubble-gum bubble with a diameter of 58.4 cm. what would the tangential speed of those points be
Prior to the development of the digital camera, the 35-mm film camera was the norm. The designation "35 mm" refers to the size of the film (screen) on which the image is formed, What must the focal length of the camera lens be
The distance between 2 slits (d=0.155 mm) and a screen is 1.54 m. If the spacing between the 2nd order bright fringe and the 3rd order dark fringe is 3.50 mm obtain the wavelength of the light
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