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The average kinetic energy per molecule of an ideal gas with originally Ni=1000 molecules is Kavg=500J. More molecules are added to the gas until the gas increases its total thermal energy by italic capital delta E subscript t h end subscript =2500J. What is the final number of molecules Nf after this process? Assume the average kinetic energy per molecule remains unchanged during this process.
A large piece of cork weighs 0.295 N in air, he spring scale reads 0.903 N. Find the density of the cork
If linear momentum is conserved when there is no external force applied, how is angular momentum conserved
A string 3 meters long has a mass of 2 grams. one end of the string is attached to a wall, what is the speed of a transverse wave in this string
A 650 kg weather balloon is designed to lift a 4600 kg package. What volume should the balloon have after being inflated with helium 0 degrees Celsius and 1 atm pressure to lift the total load.
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 40 at 20°C. what is the temperature coefficient of resistivity
A particle with a charge of -1.5uC and a mass of 2.5x10-6 kg is released from rest at point A and accelerates toward point B, arriving there with a speed of 42 m/s. The only force acting on the particle is the electric force. (a) Which point is at..
A parallel-plate capacitor has circular plates of 10.4 cm radius and 1.67 mm separation. Calculate the capacitance in picofarads
Identify how the carbon sequestration strategy seeks to fix, or at a minimum, define what is meant by the term carbon sequestration
A 16 kg wood ball hangs from a 2 m-long wire. The maximum tension the wire can withstand without breaking is 435 N. A 1.2 kg projectile traveling horizontally hits and embeds itself in the wood ball. What is the largest speed the projectile can ha..
What horizontal force acts on the puck after the push
In one design, a large spring with spring constant 2×10^4 N/m was placed behind the cannon. The other end of the spring braced against a post that was firmly anchored to ship's frame.
A bungee cord is stretched between two poles with a force of 447 N, What is the velocity of a wave on this bungee cord
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