n 2000, a gargantuan iceberg broke away from the Ross Ice Sheet in Antarctica. It was approximately a rectangle with dimensions 295 km295 km long, 37.0 km37.0 km wide, and 250.0 m250.0 m thick. What is the mass of this iceberg, given that the density of ice is 917 kg/m3917 kg/m3? How much heat transfer ?Q in joules is needed to melt the iceberg? Assume that the temperature of the iceberg is uniform at 0∘C.0⁢∘C. The latent heat of fusion for water is 334 kJ/kg. How many years would it take sunlight alon

n 2000, a gargantuan iceberg broke away from the Ross Ice Sheet in Antarctica. It was approximately a rectangle with dimensions 295 km295 km long, 37.0 km37.0 km wide, and 250.0 m250.0 m thick. What is the mass of this iceberg, given that the density of ice is 917 kg/m3917 kg/m3? How much heat transfer ?Q in joules is needed to melt the iceberg? Assume that the temperature of the iceberg is uniform at 0∘C.0⁢∘C. The latent heat of fusion for water is 334 kJ/kg. How many years would it take sunlight alon

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter2: The Kinetic Theory Of Gases

Section: Chapter Questions

Problem 77AP: (a) Find the density in SI units of air at a pressure of 1.00 atm and a temperature of 20 , assuming...

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(a) Find the density in SI units of air at a pressure of 1.00 atm and a temperature of 20 , assuming that air is 78% N2, 21% O2, and 1% Ar, (b) Find the density of the atmosphere on Venus, assuming that it's 96% CO2 and 4% N2, with a temperature of 737 K and a pressure of 92.0 atm.
For the human body, what is the rate of heat transfer by conduction through the body’s tissue with the following conditions: the tissue thickness is 3.00 cm, the difference in temperature is 2.00 °C , and the skin area is 1.50 m2 .How does this compare with the average heat transfer rate to the body resulting from an energy intake of about 2400 kcal per day? (No exercise is included.)
What is the cost of heating water in a swimming pool of radius 3.5 m and depth 1.3 m from 13 degress celcius to 27 degress Celcius. If the price of energy is $0.08/ KWh. The specific heat of water is 4186 J/Kg/Cdegrees and density of water is 1000 Kg/m^3. (Hint: Volume of cylinder is πr2h) A. $30.25 B. $65.15 C. $95.50 D. $25.25 E. $133
For the human body, what is the rate of heat transfer by conduction through the body’s tissue with the following conditions: the tissue thickness is 3.00 cm, the change in temperature is 2.00C, and the skin area is 1.50 m2. How does this compare with the average heat transfer rate to the body resulting from an energy intake of about 2400 kcal per day? (No exercise is included.)
A silver kettle weighs 1.07 kg. (The specific heat of silver is 0.235 J/g·°C) (a) What is the heat capacity (in J/°C) of the kettle? _____ J/°C (b) How much heat (in J) is required to increase the temperature of this kettle from 20.5°C to 98.7°C? _____ J (c) How much heat (in J) is required to heat this kettle from 20.5°C to 98.7°C if it contains 1.03 L of water (density of 0.997 g/mL and a specific heat of 4.18 J/g·°C across the temperature range)? _____ J
During heavy exercise, the body pumps 2.00 L of blood per minute to the surface, where it is cooled by 2.00ºC . What is the rate of heat transfer from this forced convection alone, assuming blood has the same specific heat as water and its density is 1050 kg/m? (answer in W)
In 1986, a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 155 km long, 40.0 km wide, and 250 m thick. (a) What is the mass of this iceberg in kg, given that the density of ice is 917 kg/m3? Answer ____________ kg (NO scientific notation ONLY Real Number) (b) How much heat transfer (in joules) is needed to melt it? Answer ____________ J (NO scientific notation ONLY Real Number) (c) How many years would it take sunlight alone to melt ice this thick, if the ice absorbs an average of 100 W/m2, 11.00 h per day? Answer ____________ yr
On a hot day, the temperature of an 84500-L swimming pool increases by 1.35∘C. a. What is the net heat transfer, in joules, into the pool during this heating? Ignore any complications, such as loss of water by evaporation.
Consider a 20 cm thick granite wall with a thermal conductivity of 2.79 W/m·K. The temperature of the left surface is held constant at 50°C, whereas the right face is exposed to a flow of 22°C air with a convection heat transfer coefficient of 15 W/m2·K. Neglecting heat transfer by radiation, find the right wall surface temperature and the heat flux through the wall.
Several ice cubes (ρi = 0.9167 g/cm3) of total volume Vi = 225 cm3 and temperature 273.15 K (0.000 °C) are put into a thermos containing Vt = 660 cm3 of tea at a temperature of 313.15 K, completely filling the thermos. The lid is then put on the thermos to close it. Assume that the density and the specific heat of the tea is the same as it is for fresh water (ρw = 1.00 g/cm3, c = 4186 J/kgK). A: Calculate the amount of heat energy Qm in J needed to melt the ice cubes (Lf = 334 kJ/kg). B: Calculate the equilibrium temperature TE in K of the final mixture of tea and water. C: Calculate the magnitude of the total heat transferred QT in J from the tea to the ice cubes.
A certain material has a thickness of 30 cm and a thermal conductivity of 0.04 W/m・ ◦C. At a particular instant in time, the temperature distribution with x, the distance from the left face, is T =150x2 −30x, where x is in meters. Calculate the heat-flow rates at x = 15 cm.
One end of an aluminum rod (50 cm long) is maintained at 1000C by immersing in a pot of boiling water and the other end at 00C by an ice-water mixture. If the cross-sectional area of the rod is 1.3 cm2, how much ice will the rod melt in 20 minutes? (thermal conductivity of Al is 205 W/m.0C) a) 0.19 kg b) 1.9 kg c) .019 kg Now consider the same situation, but the 50 cm long rod is half aluminum (25 cm) and half copper (25 cm). The aluminum end is in boiling water. The copper end is in the ice-water mixture. What would be the steady temperature of the Al-Cu junction? a) 50 0C b) 34.75 0C c) 65.25 0C How much ice will the rod melt in 20 minutes? a) 0.025 kg b) 0.25 kg c) 2.5 kg