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A cup of hot coffee is placed inside a large, well-insulated container. Over a five minute period, the entropy of the cup decreases by 100 J/K. What can you say about the entropy of the air surrounding the cup?
a 310 g- paperback book rests on a 1200 g -textbook. a force is applied to the textbook and the two books accelerate
A turntable is a uniform disc of mass 1.2 kg and radius1.3 *10^-1 m . The turntable is spinning at a constant rate of f0 = 0.5 Hz. What is the magnitude of the frictional torque
Assume the volume of the tank and the temperature of gas remain constant all through this operation.
hydrogen atom number 1 is known to be in the 4f state. hydrogen atom number 2 is in the 5d state. what is the energy of
A solenoid that is 111 cm long has a cross-sectional area of 13.8 cm2. There are 958 turns of wire carrying a current of 7.62 A. Calculate the energy density of the magnetic field inside the solenoid
A train moving at a constant speed of 64.0 km/h moves east for 50.0 min, then in a direction 40.0° east of due north for 19.0 min, and then west for 53.0 min
A silicon solar cell looks like a battery with a 0.33Vterminal voltage. What is the solar cell's efficiency-that is, what percentage of the energy incident on the cell is converted to electric energy
two cylindrical wires of identical length are madeof copper and aliminum. if they carry the same current and have the
question a straight line ab with slope passes through the point of intersection of two other straight lines whose
One argument against Darwin's theory of evolution draws upon the second law of thermodynamics. Does this mean that organisms violate the Second Law of Thermodynamics
The weight of passengers on a roller coaster increases by 53% as the car goes through a dip with a 35m radius of curvature
A parallel plate capacitor has plates of area 2.0*10^3 and plate separation 1.0*10^4m. find the capacitance of this system if air fills the volume between the plates.
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