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In a container of negligible mass, 0.190 kg of ice at an initial temperature of -29.0C is mixed with a mass m of water that has an initial temperature of 80.0C. No heat is lost to the surroundings.
If the final temperature of the system is 29.0C, what is the mass m of the water that was initially at 80.0C?
If the patch is 78 meters wide and the average force of air resistance on the skier is 179 newtons, explain how fast is she going after crossing the patch?
An air conditioner connected to a 120 V rms ac line is equivalent to a 12.7 ? resistance and a 1.53 ? inductive reactance in series. estimate the impedance of the air conditioner
Two point charges totalling 7.00 µC exert a repulsive force of 0.300 N on one another when separated by 0.441 m. What is the charge on each? What is the charge on each if the force is attractive?
A long wire lying along the x-axis carries a current of 1.60 A in the +x direction. There is the uniform magnetic field present, given by B=0.003i + 0.004j + 0.002k, where i, j, k are the unit vectors along cartesian coordinate axes') in units of Tes..
The perspective provided by Multiple-Concept is useful here. The highest barrier that a projectile can clear is 15.60 m, while the projectile is launched at an angle of 23.0 ° above the horizontal. What is the projectile's launch speed.
A solenoid 3.0 cm long consists of 3921 loops of wire. If the magnetic field inside the solenoid is 4.0 T, what is the magnitude of the current that flows through it
A machine does work at a rate given by Pct^2 , where c = 15W/s^2 and t is time. Find the work done by the machine between 15s and 20s? huh
The pressure in an automobile tire is usually quoted (in the United States) in pounds per square inch (lb/in2), What is the value of the gauge pressure in Pascals
In an oscillating LC circuit in which C = 850 mF, the maximum potential difference across the capacitor during the oscillations is 12.8 Volt and the maximum current through the inductor is 150 mA. Determine the frequency of the oscillations
A line of charge with uniform density of 30.0 nC/m lies along the line y = -15.0 cm, between the points with coordinates x = 0 and x = 32.0 cm. Find the electric field it creates at the origin
A particular wire has a diameter of 1.7 mm and length of 1.3 m. If its resistance is 15 m?, what is the resistivity of the metal from which it is made
a model rocket is shot straight up. shortly running out of fuel, the upward thrust on the rocket is 2 N, calculate the mass of the rocket
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