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Yes, internal energy can be increased by changing the phase of a substance (melting, boiling) or doing work on it, even if the temperature remains constant. Related Questions: Two liquids A and B have densities of 1 g/mL and 1.2 g/mL, respectively. When both liquids are poured into a container, one liquid floats on top … Read more
Water is not used because it has a high freezing point (0°C), a low boiling point (100°C), and adheres to glass, making readings inaccurate. Related Questions: Two liquids A and B have densities of 1 g/mL and 1.2 g/mL, respectively. When both liquids are poured into a container, one liquid floats on top of the … Read more
Plasma is a state of matter where atoms lose electrons due to high energy, creating a mixture of free electrons and positive ions. It occurs naturally in stars and lightning. Related Questions: Two liquids A and B have densities of 1 g/mL and 1.2 g/mL, respectively. When both liquids are poured into a container, one … Read more
The volume of a human body can be determined using the water displacement method. The person is fully submerged in a graduated tank, and the rise in water level is recorded as the volume. The density is then calculated using the formula: Density = Mass / Volume. Related Questions: Two liquids A and B have … Read more
Liquid A is on top because it has a lower density than liquid B. Less dense liquids float on denser ones due to the difference in buoyant force. Related Questions: Differentiate the terms ‘science’, ‘technology’, and ‘engineering’ with suitable examples. Explain the terms hypothesis, theory, and law with examples. Define the scientific method and list … Read more
A galvanometer is a sensitive device used to detect and measure small electric currents. It operates based on the principles of electromagnetism, particularly the interaction between an electric current and a magnetic field. Here’s how it works: Step 1: Current Creates Magnetic Field: Inside the galvanometer, there is a coil of wire placed within a … Read more
An electric bell operates using the principle of electromagnetism, which is the interaction between electric current and magnetic fields. Here’s a detailed explanation of how it works: Step 1: Electromagnet Creation: When an electric current flows through a coil of wire (also called a solenoid) within the electric bell, it generates a magnetic field around … Read more
The right-hand rule is a helpful way to determine the direction of the magnetic field surrounding a current-carrying wire. Here’s how it works: Step 1: Hold the wire with your right hand. Step 2: Position your thumb in the direction of the conventional current flow (from positive to negative, or in the direction that positive … Read more
Increasing the number of turns increases the magnetic field strength because more loops mean a greater concentration of the field. Related Questions: Can two magnetic field lines intersect each other? Justify your answer. A freely suspended magnet always points along the north-south direction. Why? What is the neutral zone or field-free region of the magnetic … Read more
Magnets help create rotational motion by interacting with current-carrying conductors, converting electrical energy into mechanical energy. Related Questions: Can two magnetic field lines intersect each other? Justify your answer. A freely suspended magnet always points along the north-south direction. Why? What is the neutral zone or field-free region of the magnetic field? Is there any … Read more