A farrier makes horseshoes and is a specialist in equine hoof care. In making a horseshoe a farrier heats 0.950 kg of iron, hammers it into shape, and then drops it into a bucket containing 10.0 kg of water, which is at room temperature (20.00°C). A few minutes later the water and horseshoe have reached an equilibrium temperature of 22.25°C. The specific heat capacity of iron is 448 J/(kg-K); what was the initial temperature of the horseshoe before it was dropped in the water? Assume no loss of thermal energy to the surroundings. A) 241.3°C B) 198.8°C C) 221.3°C D) 243.8°C

A farrier makes horseshoes and is a specialist in equine hoof care. In making a horseshoe a farrier heats 0.950 kg of iron, hammers it into shape, and then drops it into a bucket containing 10.0 kg of water, which is at room temperature (20.00°C). A few minutes later the water and horseshoe have reached an equilibrium temperature of 22.25°C. The specific heat capacity of iron is 448 J/(kg-K); what was the initial temperature of the horseshoe before it was dropped in the water? Assume no loss of thermal energy to the surroundings. A) 241.3°C B) 198.8°C C) 221.3°C D) 243.8°C

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

You are heating 310 mL of water to make tea; however, you forget the pot on the stove, and all of the water boils away. All of the steam quickly condenses onto the plastic shelf that hangs above the stove. The shelf is initially at 20°C, and heats uniformly to 33°C after all the steam condenses into water on it. The specific heat of water is 4190 J/kg K and that of plastic is 1670 J/kg K. The latent heat of fusion of water is 3.33×105 J/kg and the heat of vaporization of water is 22.6x105 J/kg. The density of water is 1000 kg/m3, and 1 mL = 10-6 m³. Your kitchen is at sea level. What is the mass of the shelf? Assume that no energy is lost to the environment.
In an experiment, a 125-g sample of an unknown metal is heated to 98.0°C. The metal is then placed into a 25.0-g aluminum calorimeter cup (with c = 900 J/kg.°C) containing 200-g of water at 20.0°C. When equilibrium is reached, the final temperature is 28.2°C. What is the specific heat of the unknown metal? %3D 637.2 J/kg-°C 673.7 J/kg.°C 679.9 J/kg.°C 788.5 J/kg.°C А. D. В. 808.0 J/kg.°C Е. С. 775.2 J/kg.°C F.
At a fabrication plant, a hot metal forging has a mass of 68.1 kg and a specific heat capacity of 434 J/(kg Cº). To harden it, the forging is quenched by immersion in 740 kg of oil that has a temperature of 33.1 °C and a specific heat capacity of 2660 J/(kg C°). The final temperature of the oil and forging at thermal equilibrium is 52.5 °C. Assuming that heat flows only between the forging and the oil, determine the initial temperature in degrees Celsius of the forging.
A closed box is filled with dry ice at a temperature of -86.0 °C, while the outside temperature is 21.0 °C. The box is cubical, measuring 0.394 m on a side, and the thickness of the walls is 4.49 × 102 m. In one day, 3.76 × 106 J of heat is conducted through the six walls. Find the thermal conductivity of the material from which the box is made. Number Units
A sealed container holding 0.492 kg of liquid nitrogen at its boiling point of 77.3 K is placed in a large room at 23.2°C. Energy is transferred from the room to the nitrogen as the liquid nitrogen boils into a gas and then warms to the room's temperature. Liquid nitrogen has a latent heat of vaporization of 2.01 ✕ 105 J/kg. The specific heat of N2 gas at constant pressure is cN2 = 1.04 ✕ 103 J/kg. K (a) Assuming the room's temperature remains essentially unchanged at 23.2°C, calculate the energy (in J) transferred from the room to the nitrogen. (b) Estimate the change in entropy of the room (in J/K).
A chunk of hot iron is pulled out of a fire and placed between aluminum vice grips. The mass of the iron is 219 g and the mass of the aluminum is 66.4 g. The iron is initially 351.8 °C. The aluminum is initially 24.7 °C. Assuming no loss of heat to the environment, what is the final temperature of the iron-aluminum system? I couldn't even get started on this one.
An artist working on a piece of metal in his forging studio plunges the hot metal into oil in order to harden it. The metal piece has a mass of 62 kg and its specific heat is 0.1027 kcal/(kg · °C). He uses 810 kg of oil at 35°C. The specific heat of oil is 0.7167 kcal/(kg · °C). Once the metal is immersed in the oil, the temperature reaches an equilibrium value of 38°C. How hot was the forged metal piece just before he plunged it into the oil?
You are given 204 g of coffee (same specific heat as water) at 80.0°C (too hot to drink). In order to cool this to 60.0°C, how much ice (at 0.0°C) must be added? Ignore the heat capacity of the cup and heat exchanges with the surroundings. Specific heat capacity (15.0°C) of water is 4.186 kJ/(kg-K). The latent heat of fusion of water is 333.7 × 103 J/kg.
Suppose you place 0.265 kg of 24.5°C water in a 0.45 kg aluminum pan with a temperature of 147.5°C, and 0.0125 kg of the water evaporates immediately, leaving the remainder to come to a common temperature with the pan. What would be the final temperature, in degrees Celsius, of the pan and water? The heat of vaporization of water is Lv = 2256 kJ/kg. You may neglect the effects of the surroundings and the heat required to raise the temperature of the vaporized water. Te =
An aluminum bar has a cross-section that is 5.1 cm by 6.93 cm and is 1.91 m long. Aluminum has a thermal conductivity of 205 W/m K. If the aluminum bar is used to bridge between ice at 0 °C and boiling water at 100 °C, what is the rate of heat transfer (in W) along the bar?
7. (a) What is the heat capacity of a system consisting of a 0.3600 kg brass cup filled with 0.05000 kg of water? in kJ/K (b) What is the heat capacity of a system consisting of 7.700 kg of water in a 0.8800 kg aluminum bucket? in kJ/k
An aluminum calorimeter with a mass of 90g contains 245g of water. The calorimeter and water are in thermal equilibrium at 10°C. Two metallic blocks are placed into the water. One is a 49g piece of aluminum at 70°C. The other has a mass of 460g and is originally at a temperature of 100°C. The entire system stabilizes at a final temperature of 20°C. Determine the specific heat of the unknown sample.