Why is the roof of buildings painted white? a) Because it absorbs radiation b) Because it reflects radiations c) Because it is cheaper d) Because it conducts heat

Q: 1. Choose the wrong statement(s) among the following regarding phase transition:A. Temperature…

A: The objective of the question is to identify the incorrect statement(s) about phase transition from…

Q: The heat gained or lost by a body during a change of state is the product of its ______ and the…

A:

Q: The rate of heat transfer on a cold day in the Canada through a rectangular window is 2300 W. The…

A:

Q: Heat is transferred by what method(s) through a glass windowpane? a) convection b) conduction c)…

A: Introduction: Conduction: Conduction refers to the transfer of energy through the movement of…

Q: Why the sand is much hotter compared to water in the beach if they are exposed with the same source…

A: Explanation: The heat energy required is directly proportional to the specific heat capacity, the…

Q: 14) If you wanted to know how much the temperature of a particular piece of material would rise when…

A: Write the expression for the heat energy. Here, m is the mass, c is the specific heat, and ΔT is…

Q: In a room where the temperature is relatively low and uniform, metallic objects appear cooler to the…

A: In a room where the temperature is relatively low and uniform, metallic objects appear cooler to the…

Q: What is considered as zero point on the Kelvin scale? a) -273.15K b) -273.15°C c) 0°C d)…

A: To find: What is considered as zero point on the Kelvin scale

Q: Coefficient of absorption of a body is 0.54 and coefficient of reflection is 0.16.The amount of heat…

A: Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion,…

Q: Many objects, such as train tracks and road joints, are specifically designed to allow extra space…

A: Concept used is expansion with rise in temperature

Q: Consider the electric force between a pair of charged particles a certain distance apart. By…

A: Given data:  The new charge on one particle (q'1) = 3q1 The other charge and distance remains same…

Q: 41.) The total energy of the particles of a substance as well as their potential energy is the…

A: 41. The energy contained in the motion and vibration of molecules of an object or the energy arises…

Q: A 19 century lab technician is testing possible metals for bulb filaments. A tantalum filament with…

A: Given: In this question, the given details are, A 19 century lab technician is testing possible…

Q: To measure the wet bulb temperature, the thermometer reservoir is surrounded by a wet cloth to mimic…

A: In the wet bulb temperature measurement , the thermometer is surrounded by wet cloth to mimic air…

Q: Would it be easier to heat a 1 kg piece of steel or a 1 kg piece of copper? In other words, for…

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Q: How does the thermos shown below keep the contents at a constant temperature? A. The thermos stores…

A: To explain : How the thermos help to keep its contents at constant temperature

Q: A water-heater is covered up with insulation boards over a total surface area of 3 m2. The inside…

A: Option

Q: If you hold a piece of copper wire over the flame of a wooden match, heat will be conducted by the…

A: In this, we have to tell which statement is fitted from given passage.

Q: 9) Which of the following statements describes the relationship between the Celsius and Kelvin…

A: We, know 0° C = 273.15 K, which is the freezing point of water. Also 100°C = 373.15 K, which is the…

Q: As thermal energy leaves a substance what can happen? (select all that are possible). A. The…

A: When thermal energy leaves a substance  temperature of substance decreases  Temperature is a measure…

Q: A piece of wood lying in the Sun absorbs more heat than a piece of shiny metal. Yet the metal feels…

A: A piece of wood lying in the Sun absorbs more heat than a piece of shiny metal.

Q: Which of the following best describe radiation? A. Hot liquid or air that expands, becomes less…

A: Answer - Option C ( "When heat is transferred from objects like rays of light or…

Q: If we use 67 W of power to heat 148 g of water, how long will it take to raise the temperature of…

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Q: A 12 kg object is dropped from a height of 10 m and strikes the ground with a speed of 8.0 m/s. How…

A: Given, Mass of object (m) = 12kg  Object dropped from height (h)= 10m  Object strike the ground with…