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Question1
A piece of aluminium (specific heat 0.910 kJ/kg 0C) of mass 138 g at 74 0 C is dropped into a Styrofoam cup filled with 159 ml water at 20 0 C. What are the final temperatures of water and aluminium?
Question2
An airplane is flying in a horizontal circle at a speed of 47.6 m/s. The 72.9 kg pilot does not want his radial acceleration to exceed 8.1 g. An acceleration of gravity is 9.8 m/s2 .What is the least radius of circular path?
Question3
A 50-turn rectangular coil of dimensions 5.00 cm × 10.0 cm is allowed to fall from a position where B = 0 to a new position where B = 0.500 T and is the magnetic field directed perpendicular to the plane of the coil. Compute magnitude of the average emf that is induced in the coil if the displacement occurs in 0.250 s.
An archeological specimen containing 8.7 g of carbon has an activity of 1.8 Bq. How old (in years) is the specimen
If a cat repeatedly rubs against your cotton slacks on a dry day, the charge transfer between the cat hair and the cotton can leave you with an excess charge of -2.00 ?C. How many electrons are transferred between you and the cat
A block of mass m1 = 0.57kg is placed on top of another block of mass m2 =0.97kg, What minimum coefficient of static friction between the two blocks will prevent the upper one from slipping
A cylindrical container with a cross-sectional area of 66.2 holds a fluid of density 816 kg/m3, and bottom of the container the pressure is 118 kPa. What is the depth of fluid.
On a workday the average decibel level of a busy street is 84 dB, with 100 cars passing a given point every minute. what is the decibel level of the street
Calculate the ground state energy of of pi-electrons in octatetraene, C8H10, using the particle in a box model. To calculate the box length, assume that the molecule is linear and use the values 1.35 and 1.54 angstroms
A 8.80-g bullet has a speed of 1.17 km/s. What is the bullet's kinetic energy if its speed is halved
Two identical probes are sent along the same path toward a neutron star. Find the distance between the center of mass of the two probe system
A spinning flywheel has rotational inertia I = 401.0 kg · m2. Its angular velocity decreases from 20.4 rad/s to zero in 261.6 s due to friction
A railroad car of mass 3.3 104 kg moving at 3.50 m/s collides and couples with two coupled railroad cars, How much kinetic energy is lost in the collision
How much energy transfer as the reason of a temperature difference was there from the stove into the system consisting of the water plus the pan.
A student from Sidney, Australia compares the distance he obtained from the 1-st spark mark to the 20-th spark mark, What difference in the results was found
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