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A 100 gram aluminum calorimeter contains 250 gram of water. The two metals are in thermal equilibrium at 10°C. Two metallic blocks are placed in the water. One is a 50 gram piece of copper at 72°C. The other sample has a mass of 73 gram and is originally at a temperature of 100°C. The entire system stabilizes at a final temperature of 20°C. Compute the specific heat of the unknown sample.
J/kg•°C
What voltage must be applied to the 10.0 µF capacitor of a heart defibrillator to store 450 J in it? Find the amount of stored charge
Acceleration on the moon is g/6. If an astronaut hit a golf ball with a speed and launch angle that would result in a 120m horizontal range on earth, how far would it go
john throws a baseball from the outfield from shoulder height at an initial velocity of 29.4 ms at an initial angle of
Calculate the peak voltage of a generator that rotates its 210 turn, 0.100 m diameter coil at 3600 rpm in a 0.830 T field
A 10.0kg block of ice is sliding due east at 8.00 m/s when it collides elastically with a 6.00kkg block of ice, Determine the velocities of the blocks of ice
A 200-m-wide river flows due east at a uniform speed of 4.5m/s. A boat with a speed of 9.0m/s relative to the water leaves the south bank pointed in a direction 28o west of north. How long does it take for the boat to cross the river
A rotating flywheel can be used to store energy. if it is required to store 1.00 x 10^6 J of energy when rotating at 200 rad/s, what is the moment of inertia of the wheel
A vibration sensor, used in testing a washing machine, consists of a cube of aluminum 1.50 cm on edge mounted on one end of a strip of spring steel (like a hacksaw blade) that lies in a vertical plane. what is its frequency of vibration
Two wires are identical, except that one is gold (resistivity = 2.44×10-8 ?·m) and the other is NiChrome (resistivity = 1.10×10-6 ?·m). What is the resistance of the NiChrome wire
Capacitance and resistance network.
A CD-RM starts from the rest and undergoes uniform angular acceleration until it reaches 26,000 rpm in 0.25s. Though what angle does it rotate during this time
a ray of light is incident on the mid-point of a glass prismsurface at an angle of 25 degrees with the normal. for
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