1.) 11.0 grams of ice at a temperature of 0.00 Co are melted by a heater into water at 0.00 Co. Which of these expressions gives the total number of calories input into the ice required to do this? The latent heat of fusion of ice is 79.7 cal/gram.   a. 11   b. 79.7   c. 11 divided by  79.7   d. 79.7 divided by 11   e. 11 x 79.7

Q: 18) A bimetallic strip, consisting of metal G on top and metal H on the bottom, is rigidly attached…

A: The metal G  has a higher coefficient of expansion compared to that for metal H so, on placing…

Q: The vertical section of the road given in the figure should only have friction between BC. The…

A: Given  Mass 2m Height 2h

Q: 2. A 10 kW drilling machine is used to drill a bore in a small aluininium block of mass 8-0 kg. How…

A:

Q: 8. Say you have 1 kg of iron and 1 kg of water. You allow each of them to experience a temperature…

A: Temperature change in water and iron.

Q: 5. Give examples of solids that expand or contract due to temperature changes?

A: Most substances expand on heating and contact on cooling as a change on the temperature of the body…

Q: 37) During an isothermal process, 5.0 J of heat is removed from an ideal gas. What is the work done…

A: In the given question, Amount of heat removed from the system (Q) = 5.0 J The process is isothermal…

Q: A 3.00-g copper coin at 25.0°C drops 77.0 m to the ground. (a) Assuming 61.2% of the change in…

A: Given: The mass of the coin is 3.00 g. The initial temperature of the coin is 25 °C. The height of…

Q: Problem 11: The energy content of gasoline is 1.3 x 10³ J/gal. What is the change in internal…

A:

Q: **63. When perspiration on the human body absorbs heat, some of the perspiration turns into water…

A: Given data: The latent heat of vaporization at body temperature is L=2.42x106 J/kg.     The…

Q: 13. Why are some kinds of thermal treatment sometimes called energy recovery or waste-to-energy…

A: Thermal treatment refers to the use of heat to treat and breakdown waste materials in a variety of…

Q: A1,700.0 kg car with a speed of 72.5 km/h brakes to a stop. How many cal of heat are generated by…

A:

Q: An automobile with mass 2000 kg is traveling at 20 m/sec. How much heat is developed in the brakes…

A: Given, mass of automobile m= 2000kg , speed v = 20m/s

Q: 5) A bullet of specific heat 200 J/(kg "C) strikes a wall at 200 m/s and rebounds at 100 m/s.…

A: Given: specific heat, s=200J/Kg°C,  Velocity, u=200m/s  &  v=100m/s  Let the increase in…

Q: 3) Suppose you drop 100g of aluminum at a temperature of 90°C into 195g of water at 5°C. What is the…

A:

Q: 5. Soon after the Earth formed, heat released by the decay of radioactive elements raised the…

A: Given: Temperature, T1 = 300 K                         T2 = 3000 KAverage coefficient of volume…

Q: 3. After eating a 200 g pottle of yoghurt, a person decides to go for a run to burn off the extra…

A: The expression for the time is,

Q: 89. The temperatures indoors and outdoors are 299 and 312 K, respectively. A Carnot air conditioner…

A: Given: The indoor temperature is T1=299 K. The outdoor temperature is T2=312 K. The outdoor heat is…

Q: 65. A thermos contains 150 cm³ of coffee at 85 °C. To cool the coffee, you drop two 11-g ice cubes…

A: Heat lost by the coffee, Qcoffee=mcoffeeccoffee∆Tcoffee   Heat gained by ice and liquid water,…

Q: *73. Occasionally, huge icebergs are found floating on the ocean's currents. Suppose one such…

A: The expression for the heat required to melt the iceberg is, Q=mLf=ρVLf   Substitute, Q=917…

Q: Problem 15:  You are on your way to a party when the host asks you to pick up a bag of ice. At the…

A: For well insulated system , Q=mC∆T=0⇒ Q(-4.60C ice to 00C ice) + Q(00C ice to 00C water)      +…

Q: 36 Suppose 72.3 J of heat are added to a 101-8 piece of aluminuma 20.5 °C. What is the final…

A:

Q: Question 20 Thirty-five grams of lead shot is placed in a light cylinder that is 1.25 m long and is…

A: Given : m = 35 grams h = 1.25 m c = 0.03 kcal/(kg.C°) = 125.58 J/(kg.C°) n = 50

Q: How much heat has to be added to change  0.500 kg ice from -10 0C completely to  a steam of 110 0C.…

A:

Q: •6) • A body skin at 38°C has a mass of 60g. When it is immersed in a current of steam at 100°C,…

A: Given, Mass of body skin m =  360 g temprature of body skin is T 1= 38∘c After immersed temprature…

Q: 10. One of the most deadly features of an erupting volcano is an avalanche of hot ash and gas called…

A:

Q: 3. State which method of heat transfer: (a) does not require particles (b) works because particles…

A: Heat transfer It is method  in which heat energy can transfer from one to another point.

Q: A 1.00-kg block of copper at 20.0°C is dropped into a vessel that contains 0.500-kg liquid nitrogen…

A: Heat lost by Copper = Heat gained by Liquid nitrogen for temp change + heat consumed by part of liq…

Q: (17%) Problem 5: You are on your way to a party when the host asks you to pick up a bag of ice. At…

A: Initial temperature=-4.5 Final temperature=19

Q: 23. Some amount of energy is transferred by heat into a system. The net work done by the system is…

A: given data networkdone (dw) = 50 J internal energy (du) = 30 J amount of net heat =?

Q: *93. Concrete sidewalks are always laid in sections, with gaps between each section. For example,…

A: Solution : Assuming constant thermal expansion coefficient and small expansion, the linear expansion…

Q: 4. Why is the energy required to melt I kg of ice about six times lower than the energy required to…

A: SOlution; 4. to find the energy required for ice and boil water 5. heat can not transfer between two…

Q: 1. How much heat is required to raise the temperature of 4 gal of water from 60 degrees Fahrenheit…

A:

Q: 1. Heat flows from one body to other when they have A. different heat contents B. differ

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: 5. A thermally isolated vessel contains 100 g of water at 0°C when air above the water is pumped…

A:

Q: 3. Ivy and Walter get stranded in the wilderness and build a snow cave to sleep in. They want to…

A: Ivy wants to bring a large block of ice whereas Walter wants to bring a bucket of water into the…

Q: High-altitude mountain climbers do not eat snow, but always melt it first with a stove. To see why,…

A: Given- Specific heat (Cice) = 2100 j/kg0C Latent heat of fusion (Lf) = 333 kJ/Kg Specific heat of…

Q: 69. A Carnot refrigerator is used in a kitchen in which the temperature is kept at 301 K. This…

A: Given: The temperature of kitchen is TH=301 K. The refrigerator work is W=241 J. The heat removed…

Q: 5. When perspiration on the human body absorbs heat, some of the perspiration turns into water…

A:

Q: 7) What is the total amount of heat in units of Btu’s we must add to a 5.00 pound block of ice at…

A: Specific heat: It is the amount of heat required to change the temperature of substance. Latent…

Q: 10. If it takes 554 calories to increase the temperature of 100 grams of a substance by 60.0 degrees…

A:

Q: 5. An air conditioner removes heat steadily from a house at a rate of 750 k]/min while drawing…

A:

Q: 6. A steel tank initially contains acetylene gas (C:H2) at 450 kPag and 21°C. After 1.25 kg of the…

A: GIVEN : Initial pressure = P1 = 450 kPa Initial Temperature = T1 = 21o C Amount of gas used = W2 =…

Q: 2. How much work is done during the isothermal procesS? 3. How much heat is added during the…

A: 2. Explanation: Work is done during isothermal process: As temperature (T) is constant during…

Q: 2. In another process: from 8 kcal, internal energy increased to 12 kcal. 6 kcal of work is also…

A: Given(s): The initial internal energy of the system, U1=8 kcal. The final internal energy of the…

Q: 4. It is a well-known fact that water has a higher specific heat capacity than iron. Now, consider…

A: The specific heat of water is more than iron

Q: (1) What will be the effect on the particles if more heat flow out of the system? (a) They will stop…

A: If the more heat flow out of  system then temperature of system will be decrease.it means that the…

Human Metabolism

Being described as the most complicated machine ever encountered by humans, the human body and the cell metabolism is nothing less than a wonder. Metabolism is the set of life-sustaining chemical reactions within organisms.