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You drop a 289-g silver figure of a polar bear into the 251-g aluminum cup of a well-insulated calorimeter containing 275 g of liquid water at 23.1°C. The bear's initial temperature is 95.7°C. What is the final temperature of the water, cup, and bear when they reach thermal equilibrium? The specific heats of silver, aluminum, and liquid water are, respectively, 234 J/(kg·K), 910 J/(kg·K), and 4190 J/(kg·K).
The rope shown in the figure attached hereto is wound around a cylinder of of mass 4.0 kg, radius 10 cm and I =0.020kgm2, where I is the moment of inertia about an axis along the cylinder axis. If the cylinder rolls without slipping, what the line..
When Thomson experimented with his apparatus, he noticed that in one run, the electron beam dropped 1.35 cm. when it emerged from the parallel plate region (where the electric and magnetic fields were present). If L = 5 cm, E = 1000 volts/meter, d..
A boy in a moving bus at +6 m/s observes a car moving at -3 m/s. What is the actual velocity of the car with respect to the bus?
The polarizing angle for light in air incident on a glass plate is 57.2. What is the index of refraction of the glass
A proton with a speed of 2.5 × 106 m/s is shot into a region between two plates that are separated by a distance of 0.16 m. What must be the magnitude of the magnetic field
Calculate the specific heat of a metal from the following data. A container made of the metal has a mass of 3.1 kg and contains 16 kg of water
A uniform beam of length x = 1.0m and mass 10kg is attached to a wall by a cable at angle θ = 30o to the horizontal, as shown in the figure. What is the tension in the cable
At a pressure of 0.0500 atm a constant-volume ideal gas thermometer reads a temperature of 345 K. What is the thermometer's triple point pressure, Pt
A man with a mass of 90.7 kg stands up in a 71-kg canoe of length 4.00 m floating on water. How far does the canoe move
A wire has a resistance of 60.0 ohms, and is bent into a square loop with sides of length 15.0 cm. The loop is perpendicular to a magnetic field which is changing at a rate of 4.000e-3 T/s. What is the current induced in the wire?
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 6880 N/C. How many excess electrons or protons reside on the drop
an object is placed 19.2 cm from a first converging lens of focal length 12.2 cm. a second converging lens with focal
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