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After 6.00 kg of water at 77.5 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.
An object with a density of 761.0 kg/m3 and a mass of 1471.0 kg is thrown into the ocean. Find the volume that sticks out of the water
The magnetic field in an electromagnetic wave has a peak value given by B = 5.5 µT. For this wave, determine the peak electric field strength
A car is travelling at a constant speed of 31.1 m/s on a highway. At the instant this car passes an entrance ramp, a second car enters the highway from the ramp. The second car starts from rest and has a constant acceleration. What acceleration mu..
It rolls at a steady speed for 1.9 s, then one wheel begins to stick. The train comes to a stop 6.0 m from its starting point. Illustrate what is the train's acceleration after its wheel begins to stick?
A magnifier used for reading small print is shaped like a hemisphere 2.0 cm in radius, placed on top of a cylinder of the same radius, Where does the image of the print appear to be
A pencil (mass 5.8g and length 8.3cm) is at first balanced so that it is sitting vertically on a flat table. If the pencil then falls, find its angular velocity just before it strikes the tabletop. Assume that the mass of the pencil is distributed un..
A walkway suspended across a hotel lobby is supported at numerous points along its edges by a vertical cable above each point and a vertical column underneath. how much does the point move down
Two narrow slits 55 micrometer apart are illuminated with light of wavelength 507nm. What is the angle of the bright fringe in degrees
Describe a wave pulse and a continuous progressive (traveling) wave. Describe and give examples of transverse and longitudinal waves. Which of acceleration, age, speed, temperature, and velocity are vector quantities?
You have a cylindrical cup of water that springs a leak 5 cm below the surface of the water. What is the velocity of the water coming out of the hole
A certain light source is found to emit radiation whose peak value has a frequency of 1.83E+15 Hz. Calculate the temperature of the source
A rocket with an initial mass of 1 000 kg adjusts its thrust by varying the rate at which mass is ejected. at what rate is mass being ejected at that instant
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