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An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 400-g sample of silver at an initial temperature of 88°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Calculate the mass of the aluminum cup. =_____ GRAMS
A bar magnet is oriented with its magnetic dipole moment at 39.5° to the direction of a 0.0689-T magnetic field, causing a torque of 0.00351 N·m to act on it
An AC voltage source, with a peak output of 200V is connected to a 50 ohm resistor. What is the rate of energy dissipated due to heat in the resistor
Two converging lenses are placed such that they are three focal lengths apart. What is the linear magnification of the lens system
q1. a 60 kg circus performer jumps from a 6.2 m height onto a trampoline and stretches it downward 0.36 m. assume that
you wish to design a hydraulic system so that a force put into it would be increased by a factor of 100. by what factor (d2/d1) is motion reduced in the system
A high-voltage transmission line with a resistance of 0.34 omegacap.gif/km carries a current of 960 A. What is the power loss due to resistance in the line
what is the coefficient of thermal expansion for a substance that was originally 2 m long at 20 degrees C and expants to 2.0002 m at 40 degrees C
A 1.7-m length of horizontal pipe has a radius of 6.50 10-3 m. What is the pressure in the flowing water at the left end of the pipe
When cars are equipped with flexible bumpers, they will bounce off each other during low-speed collisions, thus causing less damage. What is the speed of the lighter car just after collision
The sunlight reaching the earth has a maximum electric field 810 V/m. compute the maximum magnetic field associated with it.
A hunter who is a bit of a braggart claims that from a distance of 1.7 km he can selectively shoot either of two squirrels who are sitting 8.0 centimeters apart on the same branch of a tree. Determine the diameter of the pupils of his eyes
Suppose that 3.00 g of hydrogen is separated into electrons and protons. What is the resulting compressional force on the Earth
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