The following holds true for the latent heat of fusion of a material except for a. The heat of fusion is a property of the material. b. The heat of fusion describes the amount of heat per unit mass needed to change the phase of the material. c. The heat of fusion of directly proportional to the temperature. d. The heat of fusion is constant.

Q: Two objects are touching each other. How is heat transferred from one object to the other? a.…

A: Conduction is the transfer of heat between substances that are in direct contact with each other.…

Q: What component of the improvised calorimeter acts as an insulator to prevent energy from escaping to…

A: Thermometer: It is used to measure the temperature of the liquid in the inner vessel. Styrofoam: It…

Q: 8. A farrier left a metal bar in a room of constant temperature of 0°C. The temperature of the metal…

A: Given: Room temperature Tr=0°C, At t=0  minute temperature T=120°C, At t=25  minutes temperature…

Q: A person is holding a piece of ice and it begins to melt. What is happening in terms of thermal…

A: The temperature of the hand is higher than the temperature of the ice. From the law of calorimetry,…

Q: Why is melting of ice considered as a reversible process? A. It is natural for ice to melt by…

A: In thermodynamic reversible process are those process which can come to the initial point after…

Q: As shown, by comparing the slope of the graph during the time the liquid water is warming to the…

A: The water is given same amount of heat during the entire time and the amount of substance present is…

Q: You add 135 kJ of heat to a block of metal with a mass of 5.0kg. The temperature of the metal rises…

A: The problem can be solved by using the  formula for specific heat.

Q: 9. Based on the specific heat table given, which of the following substances is the best thermal…

A: 10 ) specific heat is the heay required to raise the temperature of the object of unit mass by 1°C…

Q: An electric kettle was used to heat a 1kg of ice at freezing point. Determine the heat needed (kJ)…

A:

Q: 1. Find the specific heat of a material, if it takes 142 kJ of heat to raise the temperature of 2.5…

A: Calculate the specific heat of the material.             Q=mC∆T142×103=2.5×C×80          C  =710…

Q: A piece of copper at 35 degrees Fahrenheit is dropped into a glass of water at 10 degrees…

A: Since Copper and water both are good conductor of heat, so heat transfer takes place.

Q: 2.) Air is both a good thermal insulator and conductor. a. True b. False

A: The given statement is False. Air is a good thermal insulator but not a good conductor.

Q: A. Mechanical equivalenta of heat ן"ד"M'u) B. Water equivalent C. Rate of evaporation measurement of…

A: We are allowed to give the explanation of first three subparts of a question only which is given…

Q: 3. A solid metal ball sphere(ɛ = 0.76) has a radius of 3.5 cm is heated to 4,650 C and suspended…

A: Given: Emissivity of metal ball = ε = 0.76 Radius of the ball = r = 3.5 cm = 0.035 m Temperature of…

Q: Atoms and molecules stopped moving at all. This defines the concept of   A. Absolute temperature =…

A: Absolute temperature: The temperature where every physical motion is stopped. The temperature at…

Q: 1.  How long (in seconds) will it take to heat 40 kg of water from 40°C to 80°C with a 20-kW…

A: Since there are multiple questions posted, we will answer the first question. The heat energy needed…

Q: If you want to calculate how much heat would be needed to condense a given mass of gas at its…

A: Latent heat of vaporization: The latent heat of vaporization can be defined as when a substance is…

Q: The length of the mercury column in a non-calibrated mercury thermometer is 5.5 cm when its bulb is…

A:

Q: Steam at 100°C causes worse burns than liquid water at 100°C. This is becauseA. The steam is hotter…

A: Steam causes worse burn

Q: It is the amount of heat required to raise the temperature of a given mass by 10C ?

A: Heat capacity = mass × specific heat

Q: Specific heat of a substance is the amount of heat required to change the _____ of 1 kg of this…

A: Specific heat of a substance is the amount of heat required to change the _____ of 1 kg of this…

Q: If the temperature of the surface of the object is 705.8 K, then calculate its value in °F. O a.…

A:

Q: What must (necessarily) happen when heat is added to a material? A. The temperature of the material…

A:

Q: Following the law of conservation of energy, the temperature of a body can exceed the temperature of…

A: According to law of conservation of energy the "energy can neither be created nor destroyed, only…

Q: Which of the following statements in regard to temperature is least valid? a. Temperature is that…

A: Explanation based on MCQ's : According to thermodynamics, temperature try to create the thermal…

Q: Objects do not contain heat. It can only transfer heat from?   A. cold to hot   B. Hot to cold…

A: According to the second law of thermodynamic, heat is a form of energy that can be neither created…

Q: Indicate the mechanism of thermal energy transfer that takes place in each case. A. Heating of…

A: (A) The heating of the seawater by energy from the Sun is the combination of radiation and…

Q: A steel plate has a hole drilled through it. The plate is put into a furnace and heated. What…

A: When the heat is provided to any metal then the kinetic  energy  atom inside the metal increase…

Q: In Physics we can say that the term 'heat' can be phrased as the   A. temperature in an object. B.…

A: As we know heat is a form energy which can flow where there is difference of temperature between…

Q: Which one of the following statements is incorrect? A. The metal with higher a value expands more…

A:

Q: A steel plate has a hole drilled through it. The plate is put into a furnace and heated. What…

A: When heat is supplied to an object, its length (in the case of solid), its surface area (in the case…

Q: Which best describes the relationship between two systems in thermal equilibrium? a. no net energy…

A:

Q: 1. Which of the following thermal variables is not a state function? a. Pressure b. Internal Energy…

A: Correct answer is option (e) i.e. work

Q: ou went to Summerstrand in PE and noticed that the sea-sand on the beach is very hot on a bright and…

A: Given: You went to Summerstrand in PE and noticed that the sea-sand on the beach is very hot on a…

Q: Based on the graph below, which of the following is true? Assume that the heating rate is constant.

A: Required :  The correct option.

Q: If the temperature of the surface of the object is 745.1 K, then calculate its value in °F.

A: SOlution: Given that T = 745.1 K

Q: The amount of heat required to change the phase of 1 kg substance is a. latent heat b. either…

A: When heat is transfer to substance, two types of change is observed that is: Phase change and…

Q: A. Identify the processes that are spontaneous and non-spontaneous. 1. Dissolution of common salt in…

A: The first question with multiple subparts has been answered below by following the Bartleby…

Q: Which of the following heat transfer does not involve the medium? A. Conduction B. Radiation C.…

A: Given Which of the following heat transfer does not involve the medium, as following below.