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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.
Two bowling balls, each of mass 5kg, are located so that their centers of mass are 0.5m apart. What is the size of the force of universal gravitation
In the drawing the head-up display is designed so that the distance between the digital readout device and virtual image 1 is 1.60 m. Find the focal length of the concave mirror
A thin film of alcohol (n=1.36) lies on a flat glass plate (n=1.51). When monochromatic light is incident normally on the system, What is the thickness of the film
question1to measure weight of the cat a person places a 100 n box and a 60 n box from the ends of a uniform pole that
Sewage at a certain pumping station is raised vertically by 5.43 m at the rate of 1 860 000 liters each day. The sewage, of density 1 050 kg/m3, Find the output mechanical power of the lift station
On a cold day, 16000 J of heat leaks out of a house. The inside temperature is 20.0° C, and the outside temperature is -18° C. What is the increase in the entropy of the universe that this heat loss produces?
A microscope with a magnification of 1000 using a converging lens with a focal distance of 1.5 cm for the objective. The tube length given to you is 30 cm long. What should the focal distance of the eyepiece be if you want the eyes to be relaxed whil..
A uniform ladder 7.30 long weighing 435 rests with one end on the ground and the other end against a perfectly smooth vertical wall. What force does the wall exert on the ladder
A 25.0g arrow is shot through a 7.8 cm apple. If the arrow enters the apple at 38.8 m/s and emerges with a speed of 30.10m/s in the same direction, what is the magnitude of force with which the apple has resisted the arrow.
A copper cable is designed to carry a current of 400.00 A with a power loss of 2.00 W/m. What is the required radius of this cable
A planar electromagnetic wave is propagating in the +x direction. What is the Poynting vector at the point P at that instant
question1a curve of radius 160 m is banked at an angle of 11deg. an 808-kg car negotiates the curve at 88 kmh without
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