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After 6.00 kg of water at 70.0 oC is mixed in a perfect thermos with 3.00 kg of ice at 0.0 oC, the mixture is allowed to reach equilibrium. When heat is added to or removed from a solid or liquid of mass m and specific heat capacity c, the change in entropy can be shown to be ?S = mc ln(Tf/Ti), where Ti and Tf are the initial and final Kelvin temperatures. Using this expression and the change in entropy for melting, find the change in entropy that occurs.
A double-slit experiment is set up using red light (l = 714 nm). A first order bright fringe is seen at a given location on a screen. What wavelength of visible light (between 380 nm and 750 nm) would generate a dark fringe at the identical locati..
A 1480{\rm kg} car pulls a 320{\rm kg} trailer. The car exerts a horizontal force of 3900{\rm N} against the ground in order to accelerate. What force does the car exert on the trailer
q1. the coefficient of static friction between the 3000 lb cars tires and the road is 0.5. determine the steepest grade
A 668-kg elevator starts from rest and moves upward for 4.30 s with constant acceleration until it reaches its cruising speed, 1.65m/s. What is the average power of the elevator motor
Consider a small, conducting sphere of 0.0010 kg mass. Extra electrons are placed on this sphere, How many electrons must be added to each sphere
A standing wave on a string that is fixed at both ends has frequency 80.0 Hz. What is the speed of the waves on the string
A right side view automobile mirror with a radius of curvature of 15.0 m reflects an object at a distance of 10.0 m from the mirror. calculate the magnification factor
A pendulum of length 50cm is pulled 30 cm away from vertical axis and free from rest. What would be its speed at the bottom of its swing.
A 815-kg car stopped at an intersection is rear-ended by a 1740-kg truck moving with a speed of 13.0 m/s. find the final speed of both vehicles after the collision
a beam of white light is shined at normal incidence onto the outside of a soap bubble(index of soap solution = 1.340). What is the thinnest wall thickness of the bubble
The surface charge density on an infinite charged plane is -1.5*10^-6 N/m^2, How far does the proton travel before reaching its turning point
A home owner who lives beside a 60 Hz power line decides to harvest some energy from the oscillating field. How should they orient the coil for maximum output
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