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A freezer is used to freeze 1.0 L of water totally into ice. The freezer and the water remain at a fix temperature of T = 0°C.
(a) Evaluate the change in the entropy of the water.
j/k
(b) Evaluate the change in the entropy of the freeze.
A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 574 Hz and has a speedof 24.0 m/s. What frequency does the motorcyclist hear
A 9500-pF capacitor holds plus and minus charges of 16.5 x 10^-8. What is the voltage across the capacitor
Starting with a pure Sr-90 sample at time t=0, a researcher finds that the Y-90 activity is 22.9 mCi at t = 1 day. What was the activity at t = 0
Three capacitors having capacitances of 8.3\mu F , 8.8\mu F , and 4.0\mu F are connected in series across a 38-{\rm V} potential difference. What is the total energy stored in all three capacitors
The water is near freezing in temperature. Typically a human can only swim in such water for about 5 minutes before hypothermia sets in. Calculate the time the explorer spends in the water if the river is 87.3 feet wide
A force of 75N is applied horizontally to a box of mass 10kg, moving with an initial speed of 4m/s on a level surface with coefficient of kinetic friction= 0.3
An electromagnetic wave in a vacuum has a maximum magnetic field amplitude of 5.67×10?7 T. What is the maximum electric field amplitude of the wave
Three identical freight cars are sitting on the tracks, each separated by a small distance. A fourth car is coasting with velocity 4 m/s. How fast are the four cars moving
Electric breakdown (sparks) occur in air if the electric field reaches 3 × 106 N/C. How far must a free electron move under the influence of the above electric field
find the flux of earths magnetic field of magnitude 5.00 10-5 t through a square loop of area 40.0 cm2 for the
a cat with mass 4.5 kg is sitting on top of a turntable of mass 20 kg and radius 1.4 m. Calculate the magnitude of the angular velocity of the turntable in rotations per minute
To focus a camera on objects at different distances, the converginglens is moved toward or away from the image sensor, so a sharpimage always falls on the sensor. A camera with a telephotolens (f = 440 mm) is to befocused on an object located firs..
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