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One cubic meter of water flowing over the Union Falls in Yellowstone National Park drops 76 meter. If all of the water's potential energy is converted to kinetic energy at the bottom of the falls and the kinetic energy goes to heat the water, find the temperature increase of the water?
The image produced by a concave mirror is located 36 cm in front of the mirror. The focal length of the mirror is 22 cm. How far in front of the mirror is the object located?
you swing a 3.16-kg bucket of water in a vertical circle of radius 0.860 m. at the top of the circle the speed of the
The magnetic field B at the center of a circular coil of wire carrying a current I (as in fig. 20-9) is where N is the number of loops in the coild and r is its radius. estimate the magnetic field strength at the center of coil
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 61.22 diopters, How far is the blackboard from her eyes
a battery has an emf and an internal resistance r. when the battery is connected to a 25omega resistor the current
A velocity selector has an electric field of magnitude 2330 N/C, directed vertically upward, and a horizontal magnetic field that is directed south. Charged particles, traveling east at a speed of 7.89 x 103 m/s, enter the velocity selector and are a..
To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 14cm in diameter and 60cm in length, What is the total length of wire you will need to meet these specifications
The Apollo Lunar Module was used to create the transition from the spacecraft to the moon's surface and back. Consider the similar module for landing on the surface of Mars. Use conservation of mechanical energy to answer these questions.
he moon's diameter is 3.48 x 106 m, and its mean distance from the earth is 3.85 x 108 m. Find the diameter of the moon's image on the slide film
Find the difference of the initial and the final masses for the decay 137N?126C+p. The atomic masses of 137N, 126C,
Experimenters at the National Institute of Standards and Technology have made precise measurements of the speed of light using the fact that, in vacuum, the speed of electromagnetic waves is c = 1/?(µ0?0), where the constants µ0 = 4? multiplied by..
A uniform meter stick is in static rotational equilibrium when a mass of 220 g is suspended from the 5.0 cm mark, a mass of 120 g is suspended from the 90 cm mark, and the support stand is placed at the 40 cm mark. What is the mass of the meter stick..
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