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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?
A flat uniform circular disk (radius = 2.40 m, mass = 1.00 x 10^2 kg) is initially stationary. The disk is free to rotate in the horizontal plane about a frictionless axis perpendicular to the center of the disk. A 45.0 kg person, standing 0.95 m fro..
A stunt man whose mass is 70 kg swings from the end of a 3.10 m long rope along the arc of a vertical circle. Assume that he starts from rest when the rope is horizontal; find the tensions in the rope that are necessary to make him follow his circ..
If the orientation of the spacecraft is to be changed by 30.0°, for what time interval must the gyroscope be operated.
Make a 10 to12 slide powerpoint presentation on behaviourism and social-learning theory. Include speaker notes and graphics, limit text to fie lines, and use approximately five words per bulleted item.
Eight identical, non-interacting particles are placed in a cubical box of sides L = 0.2 nm. Find the lowest energy of the system (in electron volts) and list the quantum numbers of all occupied states if (a) particles are electrons and (b) particles..
A box with a mass of 8 kg is lifted (without acceleration) through a height of 9 m, in order to place it upon the shelf of the closet.
At time a grinding wheel has an angular velocity of 21.0. It has a constant angular acceleration of 26.0 until a circuit breaker trips at time = 1.6. From then on, the wheel turns through an angle of 435 as it coasts to a stop at constant angular dec..
Which statement is true concerning the magnitude of the net force on the plane.
A piece of balsa wood with density 0.50g/cm^3 is released under water. What is the initial acceleration?? Repeat for a piece of maple with density 0.760 g/cm^3? Repeat for a ping-pong ball with the average density of 0.127 g/cm^3.
A boy throws a 1.5 kg rock upward. To do so the boy applies a constant 38.5 N force upwards on the rock from point a to point b. after that the rock continues upward to its highest height at point c.
A total electric charge of 4.50 nC is distributed uniformly over the surface of a metal sphere with a radius of 22 cm. The potential is zero at a point at infinity. Find the value of the potential at 45 cm from the center of the sphere.
The critical angle for a special type of glass in air is 41.8. The index of refraction for water is 1.33. What is the critical angle if glass is immersed in water.
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