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A 7 kg sample of mercury is completely solidified and liberates 110 kJ of energy. What is the original temperature of the mercury? (The melting point of mercury is 234 K, the heat of fusion of mercury is 11.3 kJ/kg, and the specific heat of mercury is 140 J/kg?K.)
A 13.0-g wad of sticky clay is hurled horizontally at a 90-g wooden block initially at rest on a horizontal surface. The clay sticks to the block. what was the speed of the clay immediately before impact
Suppose that water waves coming into a dock have a velocity of 1.7 m/s and a wavelength of 2.6 m. With what frequency do these waves meet the dock
The wavelength of visible light ranges from 400 {\rm nm} to 700 {\rm nm}. Find the ranges of this light's angular frequency
The transmission axis of the analyzer makes an angle of 32.0° with the axis of the polarizer. What fraction of the original light is absorbed by the analyzer
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. What is the centripetal acceleration of the ball at 8.28 rev/s
Suppose a train engineer is climbing a vertical ladder at a speed of 0.2m/s while the train is slowly coasting east at 0.70 m/s. Find out the vector of the engineer relative to the ground in rectangular notation.
Estimate is in constant FY 1995 dollars, while the SPANIEL program cost estimate is in constant FY 1999 dollars. Which one of the following is the most valid way of comparing the costs of these two programs?
A loop of area 0.25 m2 is in a uniform 0.02 T magnetic field. What angle does the normal to the plane of the loop make
When a 29.0-V emf device is placed across two resistors in series, a current of 10.0 A is flowing in each of the resistors. compute the magnitude of the larger of the two resistances
A crankshaft with a diameter of 3.0 cm , rotating at 2500 rpm comes to a halt in 1.50 s, What is the tangential acceleration of a point on the surface of the crankshaft
The altitude of this luge track is 2237m. The altitude at the end is 2205 m. If a luger takes 48 seconds to complete a run, what is his average vertical velocity
An object is placed 40cm in front of a concave mirror whose radius of curvature is 30am. Determine the location of the image and the magnification
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