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Calculate the entropy change for the following system: One kilogram of 80 C aluminum is placed into 2L of 20 C water in a container with negligible heat capacity and adiabatic walls. The water and aluminum reach thermal equilibrium. Assume specific heat of aluminum and water are constants.
An electric current of 200 mA is maintained for 3 sec in a 20-ohm resistor. The temperature of the resistor remains constant at 25 C. What is the change in the entropy of the resistor?
Can someone tell me step by step how to do weak base and strong acid titration problems and vice versa strong base and weak acid
Absorption Costing and Performance Measures
A single circular loop of radius 0.51 m carries a current of 3.1 A in a magnetic field of 0.95 T. What is the maximum torque exerted on this loop
By differentiating the expression for the Maxwell-Boltzmann energy distribution, show that the peak of the distribution occurs at an energy of (1/2)kT.
Find breakeven and target profit volume
A bicycle is turned upside down while its owner repairs a flat tire on the rear wheel. A friend spins the front wheel, of radius 0.386 m, and observes that drops of water fly off tangentially in an upward direction, find the magnitude of the averag..
A prime minister of an emerging country once bragged that he was going to make his country self-sufficient and independent of foreigners. Do the principles of economics suggest anything about how you as a native of that country might have been aff..
A uniform electric field of magnitude 640 N/C exists between two parallel plates that are 4.40 cm apart. A proton is released from the positive plate at the same instant that an electron is released from the negative plate.
Calculate the entropy change for the following system: One kilogram of 80 C aluminum is placed into 2L of 20 C water in a container with negligible heat capacity and adiabatic walls. The water and aluminum reach thermal equilibrium. Assume specific h..
A home run is hit in such a way that the baseball just clears a wall 10 m high, located 126 m from home plate. Find the speed of the ball when it reaches the wall
A lighted candle is placed 36 cm in front of a diverging lens. The light passes through the diverging lens and on to a converging lens of focal length 10 cm that is 5 cm from the diverging lens. Find the focal length of the diverging lens
The spin cycles of a washing machine have two angular speeds, 408rev/min and 648rev/min. Find the laundry's maximum radial acceleration
question1the drawing not to scale shows one alignment of the sun earth and moon. the gravitational force that the sun
The kiloton, which is used to measure the energy released in an atomic explosion, is equal to about 4.02 x 1012 J (approximately the energy released in the explosion of 1,000 tons of TNT). Recalling that 1 kilocalorie of energy raises the temperature..
A phonograph record accelerates from rest to 47.4 rpm in 4.00 s. How many revolutions does it go through in the process
A step-up transformer has 10 turns on the primary coil and 500 turns on the secondary coil. what input current and voltage are needed
A lens is used as a magnifier to view an ant placed on a piece of paper. The image of the ant is 15cm from the lens and the magnification factor is 3. How far from the paper (the ant) is the lens
A 352-kg motorcycle is accelerating up along a ramp that is inclined 30.0º above the horizontal. Find the magnitude of the motorcycle's acceleration
After falling from rest from a height of 35 m, a 0.58-kg ball rebounds upward, reaching the height of 26 m. If the contact between ball and ground lasted 2.5 ms, what average force was exerted on ball.
A vector is located in the x-y plane. The x component is 4.00 m and the y component is 3.00 m. Find the angle that this vector makes with the positive y-axis
You are pushing a 150-kg wooden crate in a straight line a distance of 4.5 m across a wooden floor. The crate is speeding up at 0.22 m/s2. What is the work done by friction on the crate
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