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After 6.00 kg of water at 77.3 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.
You are a professional frontier re-enactor who specializes in making lead shot. How much energy is required to cool a single droplet of molten lead all the way down to 0 C
A person eats a dessert that contains 280 Calories. (This "Calorie" unit, with a capital C, is the one used by nutritionists; 1 Calorie = 4186 J.
A 1460-kg racecar is driving around a circular track of radius 161 m. What is the magnitude of the net force acting on the vehicle
Ferris wheel has radius 5.0 and makes one revolution in 8.0 seconds. What is the apparent weight (the the normal force exerted on her by the bench) of the person
question1imagine you are on a planet similar to earth where an acceleration of gravity is approximately 10 ms2.the
A mass m=4.5 kg is attached to the vertical spring with k=200 N/m and is set into motion. what is the maximum value of the velocity
Find out the net force exerted on the fluid inside the box by summing momentum flow rates out through each of four sides of the box.
A 2700 pF air-gap capacitor is connected to a 7.5 V battery. If a piece of mica is placed between the plates, how much charge will flow from the battery
Light of wavelength 631 passes through a diffraction grating having 485. What is the angle of the bright spot farthest from the center
Obtain grand mean and unadjusted means for the ANCOVA model where covariate, "xc", Treatment, "a", response, "y" are considered and calculate adjusted means given the estimates
The coil of a galvanometer has a resistance of 21.6 ?, and its meter deflects full scale when a current of 5.58 mA passes through it. What is the maximum current that this ammeter can read
In downhill speed skiing a skier is retarded by both the air drag force on the body and the kinetic frictional force on the skis. Suppose the slope angle is ? = 32.5°, What is the terminal speed
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