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An aluminum cup contains 225 g ofwater and a 40 g copper stirrer, all at 27°C. A 480 g sample of silver at an initial temperatureof 86°C is placed in the water.The stirrer is used to stir the mixture gently until it reaches itsfinal equilibrium temperature of 32°C. Calculate the mass of the aluminum cup.
g
A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.4 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings isD, and the roof of..
A coil has an inductance of 0.45 H and a resistance of 42 ohms. The coil is connected to a 5.6 V ideal battery. What is the total power that the battery supplies
q1. the critical angle for a special type of glass in air is 41.8. the index of refraction for water is 1.33. what is
one end of a copper rod is in thermal contact with a hotresrvoir at T=500K, and the other end is in thermal contact with acooler resvoir at T=300K. find the entropy change of each reservoir
A typical wall outlet voltage is 120 volts in the United States. Personal MP3 players require much smaller voltages, typically 709.5 mV. If the number of turns in the primary coil is 1353, calculate the number of turns on the secondary coil of the ad..
An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. what is the mass of this canister
A Foucault pendulum is designed to demonstrate the effect of the Earth's rotation. What is the maximum speed of the pendulum
A piece of glass has a temperature of 81.0 °C. Liquid that has a temperature of 37.0 °C is poured over the glass, completely covering it, determine the specific heat capacity of the liquid
Donald Duck and his nephews manage to sink Uncle Scrooge's yacht (m = 3781 kg), which is made of steel (? = 7850 kg/m3). In typical comic-book fashion, they decide to raise the yacht (which is now on the bottom of a lake) by filling it with ping-p..
the air speed of a plane is 320km/h. A wind is blowing fromthe southeast at 129km/h. the piolet wishes to fly directly west. calculate the ground velocity of the plain
At a winter fair a 65.5-kg stunt man is shot from a horizontal cannon that rests at the edge of a frozen lake. The human projectile is cast onto the smooth ice, slides some distance, how many revolutions does the stunt man make
An inductor is connected to the terminals of a battery that has an emf of 12.0 V and negligible internal resistance. What is the resistance R of the inductor
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