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A 15.0-kg block of ice at 0.00 °C falls into Lake Superior, which is a freshwater lake. The lake water is at 10.0 °C, and the latent heat of fusion for ice is 3.34 × 105 J/kg. Find the various changes in entropy due to the melting of the ice.
a. What is the change in entropy, ΔS, of the block of ice?
b. What is the change in entropy, ΔS, of the lake?
c. What is the change in entropy, ΔS, of the system consisting of the lake and the ice?
d. Is your answer to part (c) consistent with the reversibility or irreversibility of the melting process? Explain.
You have a ball on a wire that is twirled in a circular orbit with a radius of 3.7 m, What is the speed of the ball in orbit
The 20.0cm by 35.0cm rectangular circuit shown in the figure (Figure 1) is hinged along side ab. It carries a clockwise I = 4.90A current and is located in a uniform 1.00T magnetic field oriented perpendicular to two of its sides, as shown. Which ..
Two conductors having net charges of +12.0 µC and -12.0 µC have a potential difference of 12.0 V between them. Determine the capacitance of the system
As part of an exercise routine a 47.0 kg person climbs a set of stairs. Each stepis18.0 cm high and thereare 78 steps in the staircase. Assuming the work done coming down the staircase is negligible, howmany times must this person climb the staircase..
Much as you did with the guy, estimate the height of the clif in meters. Write just the answer below and possibly an estimate of uncertainty
A 50-kg pole vaulter running at 14 m/s vaults over the bar. Her speed when she is above the bar is 1.7 m/s. determine her altitude as she crosses the bar
Pulling down on a rope, you lift a 4.49 kg bucket of water from a well with an acceleration of 1.50 m/s2. What is the tension in the rope.
An electric field of 7.85 10^5 V/m is desired between two parallel plates, each of area 42.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate.
a 70 kg skier moving horizontally at 4.5 ms encounters a 20 degree incline.a how far up the incline will the skier move
An object with a charge of 0.980 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
A flat go-kart track consists of two straightways 100 m long with semicircular ends which have a radius of 25.0 m. Determine the magnitude of the total acceleration
In an amusement park ride called The Roundup, passengers stand inside a 19.0 m -diameter rotating ring. What is the longest rotation period of the wheel that will prevent the riders from falling off at the top
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