How much energy is lost to heat per second
A superconductor wire has a critical temperature of 90K. If the wire is at 77K, and an electromotive force of 6.0V is attached to the wire, how much energy is lost to heat per second if a current of 2 A is running through the wire?
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Now take the gas in the cylinder alone as your system. Find the work done on the system (gas alone) in kJ. What is work in kJ to overcome friction?
An aluminum nucleus has 13 protons and 14 neutrons. A copper nucleus has 29 protons and 34 neutrons. What is the force of repulsion between an aluminum nucleus and a copper nucleus when they are separated by 10 to the -9 meters?
A 0.5452 g sample which contained the monoprotic weak acid, propanoic acid, CH3CH2COOH, was dissolved in ~ 75.0 mL of water and titrated to the equivalence point with 35.81 mL of a 0.0893 M (molarity) NaOH solution.
The system also experiences a decrease in internal energy by 100 kJ, and an increase in potential energy of the center of mass by 100 kJ. Determine whether the center of mass accelerates, decelerates, or remains at uniform speed.
What is the total mechanical energy present at the height given? What is its speed just as it left the ground? What is its maximum height?
After the block is released from rest, it travels upward and then leaves the spring. To what maximum height above the point of release does it rise?
One contains 0.2 mol Pb(CH3COO)2 , the second contains 0.1 mol Na2S , and the third contains 0.1 mol CaCl2 . what is the ionic equation for the precipitation reaction or reactions that occur. and What are the spectator ions in the solution.
The edge of a cube consist of equal resistors of resistance R, which are joined at the orners, let a battery be connected to two opposite corners of a face of cube. what is the efective resistance?
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