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1) Compute the change in the internal energy of a thermodynamic system under the following scenarios: (i) 50 J of heat added and 40 J work extracted, (ii) 50 J of heat added and 75 J work extracted, (iii) 50 J of heat removed and 40 J work extracted, (iv) 50 J of heat removed and 75 J work input. 2) By how much does the internal energy of 0. 25 kg of liquid water change when it is heated from 20 C to 25 C? 3) By how much does the internal energy of 0.25 kg of ice (solid water) change when it is heated from ?10 C to ?5 C? 4) By how much does the internal energy of 0 .25 kg of ice at 0 C change when melted to liquid water (also at 0 C)? 5)By how much does the internal energy of 0.25 kg of ice at ?5 C change when it is converted entirely to liquid water at 5 C?
What is the acceleration of two falling sky divers.
two small beads having positive charges 3q and q are fixed at the opposite ends of a horizontal, insulating rod, extending from the origin to the point x=d. a third small chatged bead is free to slide on the rod. at what position is the third bead..
What is the frequency of the note played by this pipe.
For a spring-mass oscillator, if you triple the mass but keep the stiffness the same, what numerical factor does the period change? That is, if an original period was T and the new period is bT, what is b? It is useful to write out the expression ..
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1360 Hz. The bird-watcher, however, hears a frequency of 1430 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
A drinking straw 20 cm long and 3 mm in diameter stands vertically in a cup of juice 8.0cm in diameter. A section of straw 6.5cm long extends above the juice. A child sucks on the straw, and the level of juice in the glass begins dropping at 0.23c..
A pie plate is filled up to the brim with pumpkin pie filling. The pie plate is made of Pyrex and its expansion can be neglected. It is the cylinder with an inside depth of 2.10 cm and an inside diameter of 30 cm.
when the field is vertical to the plane of loop, when the field makes a 90.0 angle with the normal to plane.
Two uniform, solid disks are rotating freely about the same axis. Then they are linked together without the aid of any external influences. Before being connected.
How fast would it be moving after it had fallen a distance of 0.010-m? (Assume that the gravitational force is constant over the distance of the fall, and that the star is not rotating.)
Two charged dust particles exert a force of 8.5 x10-2 N on each other. What will be the force if they are moved so they are only one-seventh as far apart.
What is the electric potential energy of the system? (Take as zero the potential energy of the three charges when they are infinitely far apart.)" Use = 8.85 10 12 for the permittivity of free space.
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