COLLEGE PHYS. VOL 1 LLF W/MODMAST >IC<
10th Edition
ISBN: 9781323149454
Author: YOUNG
Publisher: PEARSON C
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Chapter 14, Problem 83PP
To determine
How much heat will be transferred from the cryoprotectant as it reaches thermal equilibrium with the cold plate?
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a) What is the specific heat capacity of water?_________________________b) Calculate the thermal energy (Q) transferred to a litre of water when you are using a domestickettle to boil the water, given the following equation:? = ??∆?Equation 1and assuming the following:
Initial Temperature, Ti = 20 °C, Final temperature, Tf = 100 °C, 1 litre of water ≈ 1kg of water.Show all your calculations.____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________c) Comment on the assumptions and approximations that you have made.
A block of aluminum at a temperature of T1 = 32.5 degrees C has a mass of m1 = 13 kg. It is brought into contact with another block of aluminum with a mass of m2 = 0.5m1, at a temperature of T2 = 5 degrees C. This aluminum has a heat capacity of c = 899 J/kg K.
Part a: Input an expression for the final temperature of the blocks?
Part b: What is the temperature in degrees C?
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An inventor develops a stationary cycling device by which an individual while peddling can convert all of the energy expended into heat for warming water. How much mechanical energy is required to increase the temperature of 300 g of water (enough for one cup of hot chocolate) from 20 deg C to 85 deg C? (Water has a specific heat of 4186 J kg deg C.)
part b. A mediocre cyclist can produce 150 J of energy per second. How long (in minutes) would it take this cyclist to heat the cup of water for hot chocolate?
Chapter 14 Solutions
COLLEGE PHYS. VOL 1 LLF W/MODMAST >IC<
Ch. 14 - When a block with a hole in it is heated, why...Ch. 14 - You have a drink that you want to cool off. You...Ch. 14 - A thermostat for controlling household heating...Ch. 14 - Why is it sometimes possible to loosen caps on...Ch. 14 - To raise the temperature of an object, must you...Ch. 14 - Prob. 6CQCh. 14 - If you have wet hands and pick up a piece of metal...Ch. 14 - If you add heat slowly to ice at 0C, why doesnt...Ch. 14 - Prob. 9CQCh. 14 - A person pours a cup of hot coffee, intending to...
Ch. 14 - If you put your hand into boiling water at 212F,...Ch. 14 - You are going away for the weekend and plan to...Ch. 14 - Why is snow, which is made up of ice crystals, a...Ch. 14 - A cold block of metal feels colder than a block of...Ch. 14 - Prob. 15CQCh. 14 - If heat Q is required to increase the temperature...Ch. 14 - Prob. 2MCPCh. 14 - If an amount of heat Q is needed to increase the...Ch. 14 - if you mix 100 g of ice at 0C with 100 g of...Ch. 14 - Prob. 5MCPCh. 14 - Prob. 6MCPCh. 14 - A thin metal rod expands 1.5 mm when its...Ch. 14 - Prob. 8MCPCh. 14 - Prob. 9MCPCh. 14 - The thermal conductivity of concrete is 0.80...Ch. 14 - The graph in Figure 14.24 shows the temperature as...Ch. 14 - For the sample in the preceding question, what...Ch. 14 - (a) While vacationing in Europe, you feel sick and...Ch. 14 - Temperatures in biomedicine. (a) Normal body...Ch. 14 - (a) On January 22, 1943. the temperature in...Ch. 14 - Inside the earth and the sun. (a) Geophysicists...Ch. 14 - (a) At what temperature do the Fahrenheit and...Ch. 14 - Prob. 6PCh. 14 - The Eiffel Tower in Paris is 984 ft tall and is...Ch. 14 - A steel bridge is built in the summer when its...Ch. 14 - A metal rod is 40.125 cm long at 20.0C and 40.148...Ch. 14 - A steel bar and a copper bar have the same length...Ch. 14 - An underground tank with a capacity of 1700 L...Ch. 14 - A copper cylinder is initially at 20.0C. At what...Ch. 14 - An aluminum sphere has a diameter of 30.00 cm at...Ch. 14 - The outer diameter of a glass jar and the inner...Ch. 14 - A glass flask whose volume is 1000.00 cm3 at 0.0C...Ch. 14 - Ensuring a tight fit. Aluminum rivets used in...Ch. 14 - The markings on an aluminum ruler and a brass...Ch. 14 - Prob. 18PCh. 14 - One of the moving parts of an engine contains 1.60...Ch. 14 - In an effort to stay awake for an all-night study...Ch. 14 - Prob. 21PCh. 14 - Prob. 22PCh. 14 - You are given a sample of metal and asked to...Ch. 14 - Prob. 24PCh. 14 - You add 5000 J of heat to a piece of iron and you...Ch. 14 - Prob. 26PCh. 14 - A 15.0 g bullet traveling horizontally at 865 m/s...Ch. 14 - Prob. 28PCh. 14 - A technician measures the specific heat of an...Ch. 14 - Prob. 30PCh. 14 - Consult Table 14.4. (a) How much heat is required...Ch. 14 - A blacksmith cools a 1.20 kg chunk of iron,...Ch. 14 - Treatment for a stroke. One suggested treatment...Ch. 14 - A container holds 0.550 kg of ice at 15.0C. The...Ch. 14 - On a cold winter day, a 1 kg aluminum sphere at an...Ch. 14 - Evaporative cooling. The evaporation of sweat is...Ch. 14 - Prob. 37PCh. 14 - How much heat is required to convert 12.0 g of ice...Ch. 14 - Steam burns vs. water burns. What is the amount of...Ch. 14 - Bicycling on a warm day. If the air temperature is...Ch. 14 - Overheating. (a) By how much would the body...Ch. 14 - You have 750 g of water at 10.0C in a large...Ch. 14 - Prob. 43PCh. 14 - A copper pot with a mass of 0.500 kg contains...Ch. 14 - In a physics lab experiment, a student immersed...Ch. 14 - A laboratory technician drops an 85.0 g solid...Ch. 14 - The specific heat of sulfur is 750 J/(kgK), and...Ch. 14 - An insulated beaker with negligible mass contains...Ch. 14 - A Styrofoam bucket of negligible mass contains...Ch. 14 - A slab of a thermal insulator with a...Ch. 14 - You are asked to design a cylindrical steel rod...Ch. 14 - Conduction through the skin. The blood plays an...Ch. 14 - A pot with a steel bottom 8.50 mm thick rests on a...Ch. 14 - A carpenter builds an exterior house wall with a...Ch. 14 - A picture window has dimensions of 1.40 m 2.50 m...Ch. 14 - One end of an insulated metal rod is maintained at...Ch. 14 - Prob. 57PCh. 14 - A box-shaped coal-burning stove has exhausted most...Ch. 14 - How large is the sun? By measuring the spectrum of...Ch. 14 - Basal metabolic rate. The basal metabolic rate is...Ch. 14 - The emissivity of tungsten is 0.35. A tungsten...Ch. 14 - A spherical pot of hot coffee contains 0.75 L of...Ch. 14 - Prob. 63GPCh. 14 - Prob. 64GPCh. 14 - Global warming. As the earth warms, sea level will...Ch. 14 - A Foucault pendulum consists of a brass sphere...Ch. 14 - On-demand water heaters. Conventional hot-water...Ch. 14 - Prob. 68GPCh. 14 - Shivering. You have no doubt noticed that you...Ch. 14 - A steel ring with a 2.5000 in. inside diameter at...Ch. 14 - Pasta time! You are making pesto for your pasta...Ch. 14 - A copper calorimeter can with mass 0.100 kg...Ch. 14 - A 0.4 kg piece of ice at 10C is dropped from a...Ch. 14 - Hot air in a physics lecture. (a) A typical...Ch. 14 - The ship of the desert. Camels require very little...Ch. 14 - A worker pours 1.250 kg of molten lead at a...Ch. 14 - A thirsty nurse cools a 2.00 L bottle of a soft...Ch. 14 - One experimental method of measuring an insulating...Ch. 14 - The icecaps of Greenland and Antarctica contain...Ch. 14 - The effect of urbanization on plant growth. A...Ch. 14 - Basal metabolic rate. The energy output of an...Ch. 14 - A thermos for liquid helium. A physicist uses a...Ch. 14 - Prob. 83PPCh. 14 - Prob. 84PPCh. 14 - In another experiment, you place a layer of this...Ch. 14 - To measure the specific heat in the liquid phase...
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- Relating Heat, TemperatureChange, and Heat Capacity(a) How much heat is needed to warm 250 g of water(about 1 cup) from 22 °C (about room temperature) to98 °C (near its boiling point)? (b) What is the molarheat capacity of water?arrow_forwardPS: Please answer a) correctly. A thermometer is taken from a room where the temperature is 21 C to the outdoors, where the temperature is 2 C. After one minute the thermometer reads 16 C. a) What will the reading on the thermometer be after 4 more minutes? b) When will the thermometer read 3 C? 9.64 mins after it was taken to the outdoors.arrow_forwardHow much heat transfer is required to raise the temperature of a 0.750kg aluminum pot containing 2.50 kg of water from 30.0◦ C to the boiling point and then boil away 0.750 kg of water? (2) How long does this take if the rate of heat transfer is 500 W? Draw a diagram and explain your reasoning for each steparrow_forward
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- 1. The heat of vaporization of water is 2260 kJ/kg and the heat of fusion of water is 335 kJ/kg. Use the specific heat of water is 4.186 kJ/kg·oC a) How much energy (in kJ) will it take to raise the temperature of water (15 kg) from 0°C to 100oC? b) How much energy (in kJ) would it take to then completely convert the water to steam? 2. You want to raise the temperature of 22kg of water from 60°C to 95°C. If electricity costs $0.08/kWh, how much would it cost you to use an electric heater for this process? Use the specific heat of water is 4.186 kJ/kgoC and 1 kJ = 0.00028 kWh.arrow_forwardSuppose you want to raise the temperature of a 0.185-kg piece of ice from -20.0°C to 130°C. The heat of fusion is Lf = 334 kJ/kg, and the heat of vaporization is Lv = 2256 kJ/kg. In this problem, take 1520 J/kg⋅°C as the specific heat of steam, and 2090 J/kg⋅°C as the specific heat of ice. Part (a) How much heat, in kilocalories, must be transferred for this to happen, including the energy needed for phase changes? Part (b) How much time, in seconds, is required to do this, assuming a constant 20.0 kJ/s rate of heat transfer?arrow_forwardA)Several years ago while participating in an early spring adventure race I had to cross a rapidly flowing stream that still had large chunks of ice floating in it. The stream temperature was 0 °C. What mode of heat transfer do you think dominated? B)When solid food is place (example: a grilled cheese sandwich) onto a hot frying pan the food gets hot and cooks. What do you think the dominant form of heat transfer? C)On a cold night friends love to huddle around the fireplace until we overheat . What form of heat transfer do you think dominates in this situation?arrow_forward
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