Iron is melted during the recycling process. (a) How much heat must be transferred to each kilogram of iron to bring it to its melting point, 1,536°C, from room temperature, 20°C?________J (b) About how many cups of coffee could you make with this much energy (1 cup = 73,600 J)? _____cips

Iron is melted during the recycling process. (a) How much heat must be transferred to each kilogram of iron to bring it to its melting point, 1,536°C, from room temperature, 20°C?____J (b) About how many cups of coffee could you make with this much energy (1 cup = 73,600 J)? _cips

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter1: Units And Measurement

Section: Chapter Questions

Problem 10CQ: For each of the following scenarios, refer to Figure 1.4 and Table 1.2 to determine which metric...

See similar textbooks

Similar questions

For each of the following scenarios, refer to Figure 1.4 and Table 1.2 to determine which metric prefix on the meter is most appropriate for each of the following scenarios. (a) You want to tabulate the mean distance from the Sun for each planet in the solar system. (b) You want to compare the sizes of some common viruses to design a mechanical filter capable of blocking the pathogenic ones. (c) You want to list the diameters of all the elements on the periodic table. (d) You want to list the distances to all the stars that have now received any radio broadcasts sent from Earth 10 years ago. 1.2 Units and Standards
The average life expectancy in Japan is 81 years. What is this time in SI units?
The human body is not perfectly efficient. In fact, only about 20% of the Calories we consume are used for mechanical work (i.e., moving the body around). Estimate how many granola bars (150 Cal per bar) an 85 kg person will burn if they climb vertically up the side of the Empire State Building. height of Empire State Building, h = 443 m unit conversion: 1 Cal = 4184 Joules
A person consumes about 2700 Cal a day. 1 Cal = 4186 J, and 1 kWh = 860 Cal. Part A What is this energy in joules? (2 sig figs) Part B What is this energy in kilowatt-hours? (2 sig figs) Part C If a power company charges about 10 ¢ per kilowatt-hour, how much would this energy cost per day if the person bought it from the power company? (2 sig figs)
A person consumes about 2600 Cal a day. 1 Cal = 4186 J, and 1 kWh = 860 Cal. What is this energy in kilowatt-hours? Express your answer using two significant figures.
Solve the following problem. Round off the final answer to three decimal places. A popular web site state that a 200 pound person will burn 450 calories/hour bicycling (moderate effort) and 650 calories/hour rock climbing (ascending). A 150 pound person decides to start a training routine in which she will bicycle for 45 minutes, 3 times a week and rock climb for 1.50 hours every weekend. How many calories will she have burned after 8 weeks of training (assuming she consumes at the same rate)?
How much heat is needed to melt 15.50 kg of silver that is initially at 25 °C? The melting point of silver is 961°C, the heat of fusion is 88 kJ/kg, the specific heat is 230 J/kg · Cº. Express your answer to two significant figures and include the appropriate units. HA ? Q = Value Units
A 45-kg person drinks 5.6 × 102 g of milk, which has a caloric value of approximately 3.0 kJ/g. If only 17 percent of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake? Enter your answer in scientific notation. Hint: The work done in ascending is given by mgh, where m is the mass (in kg), g is the gravitational acceleration (9.8 m/s2), and h is the height (in meters).
An unknown metal is heated and placed in a beaker of room temperature water. After a few seconds, the temperature of the water is raised from 20.0°C to 55.0°C. If 3.50 x 103 J of thermal energy is absorbed by the water, calculate the mass of water in grams. Record your rounded three-digit numeric response in the blank space below. Mass of water (g): A/ Note: Do not include units in your answer. con
Heat is added to 1 kg of water such that the temperature increases by 5 K. The specific heat capacity of water is 4, 180 J/(kg.K). The specific heat capacity of iron is 450 J/(kg.K). If the same amount of heat is added to 5 kg of iron, how much will the temperature increase? O 7.28 K O 12.28 K O 10.28 K O 9.28 K
According to the Delaware River Port Authority, the total length of the Walt Whitman Bridge is nominally 11,982 feet. Assuming that the bridge was made entirely of steel, by how many meters does the bridge’s length change as its temperature rises from a winter temperature of 5°F to a summer temperature of 105 °F? Length change = _________meters. Be sure to first convert all lengths and temperatures to S.I. units
An average person is recommended to take in 2000 calories per day (8,400,000J), because they will lose this much energy to heat and work in a typical day. A. If on Saturday you take in 10,000,000J of heat energy through food, lose 5,000,000J to heat and lose 1,450,000J to work, what is your change in energy? B. If on a typical weekday, you actually take in 5,000,000J of heat energy, and lose a total of 12,000,500J (includes both heat and work loss), what is your change in energy? C. From your work in (a) and (b), in which scenario will you store fat for future energy use, and in which scenario will you use fat for energy?