The amount of heat is negative when: 2 poin The body loses heat O The body gains heat The body is in a state of equilibrium (neither losing nor gaining heat) The body temperature is equal to the surroundings The temperature of the outside environment is more than the temperature of the body to leave

Q: The temperature is measured versus the energy added to 1 mol of a material. What is the heat…

A: Answer of the given question will be  1. Option A . 120 J °C-1 2. Option A . 20 °C  The solution of…

Q: has more specific heat

A: The amount of heat required to heat a substance is dQ=mc∆T

Q: Given two metal strips with the same initial length, steel and aluminum. When heated in the same…

A: Given  Coefficient of linear expansion of steel  αsteel =1.2 × 10-5 °C-1  αaluminium = 2.3 × 10-5…

Q: Place a 1Kg piece of iron at 40° C into a 1 Kg water bath at 20° C and the final temperature of the…

A: Write the given values to the suitable variables.Here,  are the mass of iron, the initial…

Q: How many kilo calories (kcal) are required to change 1 kg of 100°C boiling water to 100°C steam?

A: Mass of water = 1 kg  Temperature of water = 100°C  Latent heat of vaporization (Lv) = 540 cal / g…

Q: How much energy does it take to raise 200 g of aluminum from 20 °C to 3000 °C?

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Q: What is likely to happen? A body at 20 ⁰C will cool when in contact with another body at 30 ⁰C A…

A: Whenever a hot body comes in contact with the cold body then heat transfers from hot body to cold…

Q: Which of the following can only be a situation of increasing temperature? a b С d The phase change…

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Q: Ice at -20°C is added to 50 g of water at 40°C. When the temperature of the mixture reaches 0°C, it…

A: The amount of ice that has been added to the water must be calculated. We are aware that 50 g of…

Q: What would happen to the temperature of the gas

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Q: SOLIDS Material Aluminum Brass Copper Glass Gold Ice. Iron Specific heat (J/kg-K) 921 Lead Nickel…

A: Given data: The mass of the hammer, m=1.5 kg The mass of the brass nail m=12 g=0.012 kg The speed of…

Q: At 95°F, the majority of the heat from the human body is lost through radiation.  true false

A: Our body losses heat in order to maintain the required temperature to perform our organs…

Q: Which of the following cases (if any) requires the greatest amount of heat? In each case, the…

A: The expression for the amount of heat required is given by, Q=mC∆T Here. m is the mass, C is the…

Q: How much heat is required to melt 30kg of ice at 0 °C to water at 10 °C? The latent heat of ice to…

A: Here, the ice is at the melting point. First ice will completely converted into water at the melting…

Q: (11) Figure 9 shows the student's results. mass of metal block power of heater starting temperature…

A: Part (ii):The mass of the metal is 0.92 kg.The initial temperature of the metal is 20oC.The final…

Q: In the table, T₁ = 47.2 °C, E₁ = 175 J, E₂ = 819 J, E3 = 1510 J, and E4 = 2870 J. Other experiments…

A: We know that the change in heat energy with a change in temperature is given by the expression…

Q: From the given graph, which of the following statements is true? D) T (°C) 120 D 90 60 C 30 T A T B…

A: During phase change , heat supplied at constant temperature is used to change the phase of the…

Q: Heat is transmitted in liquids by convection and in solids by radiation. Select one: True / False

A: Heat is transmitted in liquids by convection is true.               Convection  usually takes place…

Q: Two objects in physical contact with each other are in thermal equilibrium.      Which of the…

A: Explanation-: when two objects are in thermal equilibrium with physical contact. In the thermal…

Q: A small iron nail is out into a bucket of cool water. Which of the following is true? the decrease…

A: Heat flows from the high temperature to the low temperature. In this flow temperature of the body of…

Q: Calculate the amount of heat required to raise the temperature of 20 g of water vapor from 250°C to…

A: Given : mass of water vapor, m = 20 g = 20/1000 Kg = 0.02 Kg  Change in temperature , ∆T =…

Q: Which of the following statements is always true?   The mass of the substance is inveresely…

A: Statement 1 is false   heat capacity =  Cp q = m Cp ∆T  q = heat transfer  m =mass  heat is…

Q: How many kilo calories (kcal) required to change 1 kg of 0°C ice to 0°C are water?

A: Total Heat required for phase change from ice to water is given by Q = ml Here, Q = total heat…

Q: The human body can cool itself by evaporation, usually in the form of sweat. Consider this cooling…

A: Given: Mass of woman m=63.5 kg, Temperature change ∆T=0.95°C, Specific heat of human body c=3500…

Q: What is the (approximate) total heat energy absorbed by the system after traversing the path AEC? *…

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Q: Q 11:- If the distance between each atom and another in a molecule of ammonia gas (NH3) is constant,…

A: Distance between each atom and another in a ammonia molecule is constant

Q: Which of the following depends only on the initial and final state of the system? Heat Change in…

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Q: Which substance would gain the most in temperature by addition of an equal amount of thermal energy…

A: Write the expression for the thermal energy.

Q: At what Celsius temperature does the Fahrenheit thermometer read twice the Celsius reading?

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Q: 100°C 0°C P Boiling Ice water bath A copper rod of length 0.500 m and cross-sectional area 7.40 x 10…

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Q: On a certain dry sunny day, a swimming pool’s temperature would rise by 1.50 °C if not for…

A: Given data The increase in temperature ∆T=1.50°C.   The mathematical expression for the heat…

Q: How much energy is needed to raise the temperature of 600 g of water from 25°C to 125°C?

A: Energy needed Q=Q25→100+Qwater→steam+Q100→125

Q: An ice bag containing 0°C ice is much more effective in absorbing heat than one containing the same…

A: (a)   The heat required to raise the temperature of the water can be determined as follows.

Q: When you apply increasing thermal energy to a certain material, it reaches a temperature of 50…

A: Assuming ideal situation.  Energy is not lost during the heat transfer.

Q: In the Newton's Law of Cooling, at small differences of temperatures between the body and the…

A: Step1: Newton's Law of Cooling Newton’s law of cooling states that the rate of heat loss from a body…

Q: A 0.065-kg ice cube at -30.0°C is placed in 0.375 kg of 35.0°C water in a very well-insulated…

A: Please see the answer below

Q: Given two metal strips with the same initial length, steel and aluminum. When heated in the same…

A:

Q: An increase in thermal energy leads to what? An increase in frictional forces on an object Ob A…

A: It is asked, "an increase in thermal energy leads to what"? Four options are given and we are…