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Assume that all gases are perfect and that data refer to 298.15 K unless otherwise stated. Calculate delta H and Delta Stot when two iron blocks, each of mass 1.00 kg one at 200 deg C and the other at 25 deg C are placed in contact in an isolated container. The specific heat capacity of iron is 0.449 J K^-1 g^-1 and may be assumed constant oer the temperatue range involved.
At 18°C, a rod is exactly 20 cm long on a steel ruler. Both the rod and the ruler are placed in an oven at 285°C, where the rod now measures 20.21 cm on the same ruler. What is the coefficient of linear expansion for the material of which the rod ..
Suppose a 65 kg person stands at the edge of a 6.5 m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1850 kg m2. Calculate the angular velocity of the turntable
A motorcycle is traveling up one side of a hill and down the other side. Determine the maximum speed that the cycle can have
A 50-g of ice cube at 0C is heated until 45g has become water at 100C and 5.0g has become steam at 100C. How much energy was needed to accomplish to transformation?
The distance between a loudspeaker and the left ear of a listener is 1.60 m. compute the time required for sound to travel this distance if the air temperature is 20° C.
A skater holds her arms outstretched as she spins at 150 rpm. What is the speed of her hands if they are 145 cm apart
A tetrahedron contains a point charge Q = 65 nC. Find the electric flux through the surface of the tetrahedrom. Find the flux through each face of the tetrahedron
You push a box up a ramp inclined at 26.2o using a force of 230.0N, for a distance of 10.9 m. How much work do you do in the horizontal direction
a solid sphere of brass (bulk modulus of 1.4x10^11 N/m^2) with a diameter of 2.3 m is thrown into the ocean. by how much does the diameter of the sphere
Carol and Robin share a house. To get to work Carol walks north 2.5{\rm km} , while Robin drives west 8.0{\rm km} . how far apart are there two workplaces
If an object is 30 cm in front of a convex mirror that has a focal length of 60 m, how far behind the mirror will the image appear to an observer? How tall will the image be?
the two stars in a binary star system have masses 1.7 x 10 ^ 30 kg and 5.8 x 10 ^ 30kg. They are separated by 2.1 x 10 ^ 12m. What is the system's rotation period, in years
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