Find total entropy change of horseshoe-plus-water system
A 0.80 kg iron horseshoe is taken from a furnace at 870°C and dropped into 3.00 kg of water at 15.0°C. Assuming that no energy is lost by heat to the surroundings, determine the total entropy change of the horseshoe-plus-water system.
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A 535 g ball swings in a vertical circle at the end of a 1.4 m-long string. When the ball is at the bottom of the circle, the tension in the string is 22 N. What is the speed of the ball at that point?
What are some of the challenges in human service work with measuring client outcomes? How might information systems help in this regard?
Briefly describe the San culture and identify three specific examples of how their kinship system impacts the way this culture behaves (i.e. thinks, acts, lives)
Nitric acid is usually purchased in concentrated form with a 70.3% HNO3 concentration by mass and a density of 1.14% g/ml. How much of the concentrated stock solution in milliliters should you use to make 2.5L of 0.500 M HNO3 .
Assuming that no energy is lost by heat to the surroundings, determine the total entropy change of the horseshoe-plus-water system.
A gymnast is performing a floor routine. In a tumbling run she spins through the air, increasing her angular velocity from 3.00 to 4.60 rev/s while rotating through three-fourths of a revolution. How much time does this maneuver take?
A model rocket rises with constant acceleration to a height of 3.7 , at which point its speed is 25.0 What was the magnitude of the rocket's acceleration?
Select a product with which you are familiar or interested in. Be sure the product has not been mentioned by other students. What are its product liability issues? What measures may management take to prevent these issues from arising? How may
Lead pellets, each of mass 1.20 g, are heated to 200°C. How many pellets must be added to 450 g of water that is initially at 20.0°C to make the equilibrium temperature 25.0°C? Neglect any energy transfer to or from the container.
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