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You drop a 281-g silver figure of a polar bear into the 231-g aluminum cup of a well-insulated calorimeter containing 253 g of liquid water at 24.5°C. The bear's initial temperature is 96.3°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).
Three resistors with resistances of 5 Ω, 9 Ω, and 12 Ω, correspondingly, are connected in a series circuit with a 6.0 Volt battery. Determine the potential difference across the 5 ohm resistor
Three solid spheres of lead, each of mass 9.8 kg, are located at three corners of a square with side lengths of 50 cm. determine the magnitude and direction of the acceleration of the smaller object when it is released
A startled armadillo leaps upward rising 0.550 m in the first 0.203 is. (a) What is its initial speed as it leaves the ground? m/s (b) What is its speed at the height of 0.550 m? m/s (c) How much higher does it go?
A typical incandescent lightbulb has a filament temperature ofapproximately 3143 K. At what wavelength is the intensity of the emitted light highest
A parallel-plate air capacitor is made by using two plates 19 cm square, spaced 3.5 mm apart. It is connected to a 3-V battery. What is the electric field between the plates
What can you conclude about the resulting displacements?
A hollow aluminum cylinder 19.0cm deep has an internal capacity of 2.000 L at 24.0°C. It is completely filled withturpentine and then warmed to 78.0°C. How much turpentine overflows
Calculate the inductance of a solenoid with 275 turns if the length of the solenoid is 30 cm and its radius is 2.5 cm
A transformer operating from 79 V (rms supplies a 18.3 V lighting system for a garden. Find the equivalent resistance of the system
a lightning bolt delivers a charge of 37 c to the ground in a time of 1.0 x 10-3 s. what is the current?the heating
An astronaut on a small planet wishes to measure the local value of g by timing pulses travelling down a wire which has a large object suspended from it. Imagine the wire of mass 3.80 g is 1.60 m long and has a 3.00-kg object suspended from it. A pul..
A baseball is struck by a bat 46 cm from the axis of rotation when the angular velocity of the bat is 70 rad/s. If the ball is hit at a height of 1.2m at a45º angle, will the ball clear a 1.2m fence that is 110 m away?
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